Tricks - flips and rolls now follow the car, not the compass. W plus jump is a frontflip and S plus jump is a backflip whichever way you are facing. Same for barrel rolls.

Switching - pressing your swap key to get out puts you back exactly where you got in, facing the way you were looking. No more drifting across the map or a turn to the left every swap.

Mid air switching - your view direction is kept when you change between car and character in the air.

Car paint - your car now appears in your chosen colour from the first frame instead of flashing the factory colour first.

Clothes - everyone now shows up in their own avatar's clothing. No more naked Terrys.

Warehouse doors - the doors now open on your first login once you have earned access, instead of needing a restart.

Trick names - the airborne flip used a world axis, so the same input gave a flip or a barrel roll depending on which direction you were driving.

Swap drift - each car to character round trip moved you by the car's spawn distance.

Swap turn - setting the character's facing on exit was read as the ground turning, which rotated the view back.

Colour flash - car paint applied one frame after the car was first drawn.

No clothing - characters were dressed before their owner was assigned, so everyone was dressed from an empty outfit.

Doors shut on first login - the achievement check cached an empty result before the service had synced and did not retry for 30 seconds.