What is this glitch?
My birthday is in April. Could i change my PS3 information to make it today or tomorrow, and get a new car? And just choose a year i want? I dont think anything cool came out in '84.
Google is your friend. Search the keywords "gt5 birthday cars list" and you'll find extensive lists of every car confirmed received as birthday cars.
Also, is it possible to keep changing your birthday each day to get a new car?
No. Your PSN account info is kept separate from your GT5 info, and as far as I've been able to figure, you can't change your PSN birthday. You have to get a new PSN account, log into that as a new user, open GT5 that day (whatever day you told it your birthday was), and get your birthday ticket that way. For a while (before 12/5-12/10, I think it was), you could receive a birthday car, send it off to your *other* account, close the game, delete your save file for the dummy account, and then log in again and get ANOTHER car and send it to your other account, and repeat. I saw people getting dozens of birthday cars a day doing that. They'd register an account on say, Dec. 8th, with a 1970 birthday, then get dozens of cool 1970 cars (and lots of uncool ones, too). Then they'd do one on the 9th for 1967, and do it again. Day in, day out, they were collecting birthday cars.
Now you're limited to sending ONE car per day, per account. So you can still register and receive birthday cars, but you better know ahead of time which one or two you want to keep, because you're going to have to keep opening the car ticket to see what you get. Once you get a really good one, send it to your other account and start again. When you get a SECOND really good one, you're done - you can't send it anywhere, so deleting the save file only hurts you, since you would now be deleting the cool car you just got!
Oh, and when you get to the point in the log-in where you get the birthday car gift ticket, quit and save to your Game Save Data file. That way, you've got an unopened ticket when you log back in. Open it, see what you get, and decide to keep it or roll the dice and try for something better.