Gymkhana is perhaps best in party mode, which can be very chaotic. I actually found it's a really good way to improve your gymkhana skills.
I mentioned in my last post that there's a gymkhana missions called Trailer Thash. You have to go into the power station itself and find a ramp tucked away in one of the corners. The idea is that you accelerate up to the ramp and then leap through one of the container trucks that you slide under in the parking lot. To clear the mission, you pretty much have to fly straight through it without touching any of the walls. You have to balance the speed and the angle just right - if you go to slow, you won't make the jump; too quick, and you'll jump too high and crash. It's the same with the angle; if you get it wrong, you'll hit the side of the container. So I was playing Transporter on the full compound last night, and I had to get the flag from under the pier to the bottom end of the parking lot. I was originally just going to charge through the station, but someone came at me and I had to go left, away from the exit. I knew the ramp leading to the open trailer was another way out, but I could never get it right. I went for it anyway, and managed to get the angle and speed dead right, and cleared the jump. I didn't actually win the point because the duty phone rang and I had to log off, but I went back into gymkhana mode later and managed to repeat what I did.