The A-Licenses CAN'T be impossible. If it was impossible, I wouldn't have beaten Gran Turismo 1 (still remains the only GT I've cleared). Now on to helping you.
First bit of advice- CALM DOWN!!! I'll have to go on the demo videos for me to see what you're talking about. Let me try to explain as best as I can by using the Demonstration files on the PS1 disc.
--- A-Class License Tests ---
1. Practical Cornering 1
2. Practical Cornering 2
3. Practical Cornering 3
4. Handling Multiple Corners 1
5. Handling Multiple Corners 2
6. Handling Multiple Corners 3
7. Advanced Techniques
8. A-Class License Final Test
A1: You are in a Toyota Supra RZ trying to take on the southern section of Deep Forest. Here's a bit of advice from me to you. You should be able to navigate the final corner of the full course by simply letting off the throttle to take the turn rather than brake. I usually don't have to brake heading into that corner unless I'm in a car that has poor handling characteristics.
A2: You're using the same wonderful car from A1 in A2 on my least favorite track in GT1- Autumn Ring Full Course. The advice I can give you is that you must have a great line heading to the first corner. The first corner comes quick, so make sure you have her lined up out of that corner. Keep a steady and fast line heading into that dreaded first corner of the full course (one reason why I hate the course). What you want to do is brake hard heading as soon as your car closes in on the curbing to your left. After hard braking, try to power out of the turn as best as possible. You are using a rear-wheel drive car. I was scared of RWD when I first raced in Gran Turismo. Just make sure not to oversteer. You oversteer and hit something or go off course- you fail.
A3: You are using a Mazda RX-7 Type RZ. You are racing on Grand Valley Speedway's full course after the super-slow chicane. This is a great test if you're an aggressive driver. The key is to watch your speed heading onto the front stretch and in taking the subsequent kink afterwards. The demo driver was running at about 140 mph before braking hard into the corner. The first corner of Grand Valley is kind of like the first corner of Autumn Hill's full course. You have this hairpin turn that you really need to practice to take it properly. When you've gathered enough speed into that hairpin, brake very hard and try to powerslide through the turn without spinning out or understeering your way into the gravel. Practice this corner in Time Trials to better prepare yourself.
A4:It's the first test with a Skyline. You excited? Well, can the excitement because this test is no fun. Here's a hint- this is the EXACT same License Test as the B-License Final in Gran Turismo 3 and perhaps the same in other GTs. You're using the same car from those other GTs for this test. First, you need to set a proper line heading into the tunnel. Try to pick a line which you can maintain your speed without smacking a wall. REALLY good racers can be able to have enough speed that the brakes won't have to be used heading into the tunnel. Treat the next corner like a turn on a rally course. You're in a 4WD car, so drift that Skyline into the corner and stay composed. The next two sections should be attainable without having much in the way of practical driving. Perhaps the key section you want to nail is the sweeping corner leading to the fastest section on the track. You are not out of bounds if you drive through the yellow diagonal lines painted on the road. As a hint from me to you, if you master this part of the track, you are about 33% ready for racing this course later on. You will have to race a full lap around Trial Mountain when you get to the International-A tests.
A5: Halfway home. You will be using a Honda Prelude Type SH and racing Grand Valley after the second hairpin. Try to balance throttle input heading into each corner. The only time you'll need to really use the brakes is the final corner. Take a smooth line going through the tunnel. As a trick for faster times heading out of the tunnel (you'll need to be crafty), instead of going in that sweeping right direction coming out of the tunnel, just stay straight. You may shave off a few hundredths to even a tenth if you don't hit the left side of the gate or veer off into the grass before crossing the line.
A6: Test A6 has you in the most affordable mid-engined car in Gran Turismo. You got the Toyota MR2 GTS going around Deep Forest. This section reminds me of two tests in Gran Turismo 3 where you use an MR-S and then a Subaru Impreza Rally Car around this same section. Here's what you do. Deep Forest is essentially a road course with rally elements. Here, you face a series of S-turns. You must try not to go too fast in any one section of the course except for heading out of the tunnel. Pick a line that allows you to keep a steady speed without flirting with the thought of flying off the track. You may need to view the Demonstration video for A6 if you need more help. Study the video and try to drive as best as possible as you've learned from the Demo video.
A7: Believe it or not, this is actually the easiest and most fun license test in the A-Class. You are using a Subaru Impreza around a portion of the front stretch of Grand Valley Speedway. You need to make five laps in this section of track that lasts about 100 meters. I say it's easy because cat can be easy to get gold as long as you can keep a consistent pace around this super-short section. It can almost be a slalom if you handle the Subaru properly. Don't treat the two corners like they are hairpins. Instead, treat them like they are smooth 180-degree corners. All it takes is a good racing line. Once the line is established, stick with it. Don't modify it, don't experiment one lap, just keep a consistent line. It's very easy to get gold (or at least silver) if you know what you're doing.
A8: (NOTE: You must clear tests A1-A7 before attempting this test The A-License final has you with a Toyota Supra RZ. This one absolutely scared me when I was a Gran Turismo rookie. Now that I'm a semi-established veteran of the Gran Turismo series, this is not much of a sweat. The test starts outside of the super-slow chicane of the Grand Valley full course and winds its way into the second hairpin. Remember to keep a smooth line through the first two corners. Remember how to attack the first hairpin? Practice the A3 License Test with the Mazda to know how to attack this corner. After clearing that hairpin, blast down the rest of the track until you come across a left-right-left complex. Braking is not required heading into the left-right part of the three-turn complex. The second left turn may require light braking if you're going in too fast. The second hairpin is a bit easier than the first because you're heading downhill facing the hairpin. But it is tougher to clear because you have so much speed in your turboed-up Supra (and I love the MKIV Supra). Try to brake at the 50m mark and brake hard. Try to master powersliding to get better exit speed out of the hairpin.
With all of this: that A-License is yours! You can get to enjoy racing the following series with an A-Grade License:
--- Official GT Events ---
- Clubman Cup - step up from the Sunday Cup using more technical courses. 3 races.
- Gran Turismo Cup - bring a capable car because you'll be racing longer races on tougher tracks. 4 races.
--- Special Events ---
* US vs. Japan - Take it to the Corvette with your NSX! Take it to the Skylines with your Viper! A battle between countries divided by the Pacific Ocean. American and Japanese cars only. Racing models allowed. 5 races.
* Japan vs. UK - Think your tuned-up Supra can outpace a TVR Griffith 500? Want an easy win in your DB7 (either one in the game) against something like an RX-7? Bring it! Japanese and British cars only. 5 races.
* US vs. UK - Maybe the best matchup in the game. Which country makes better cars- America or the United Kingdom? Take a side and try to pound your opposition to the ground! American and British cars only. 5 Races.
* Megaspeed Cup - My personal favorite series. Bring a high-powered and very fast car to this one. This is not for grocery getters. Bring the high-speed pain to five other jive turkeys ready to be "pwn3d" by your hot sports car. 3 races.
* Normal Car World Speed Contest - it's run what 'cha brung. Just make sure it's not heavily modified. Only as long as you don't have irreversible modifications (for example, Port and Polish or Weight Reduction), any non-racing car is legal. You may want to bring a car that's very capable even without modifications. 5 races.
See? The A-License is not impossible. Just wait until the IA-License tests. If you think the A-License tests are greatly unfair, wait until the IA tests because all eight IA tests are one-lap time trials in either of two true sports cars. Knock them down,
Nicknam4! You dig?