Nice feedback I got there. :D
You're right about the island generation. The spawner has a set distance to the player, thus the placement is highly dependent on your position from like 2 islands ago. I wanted to make the spawner recognize the last island leaving its area, resulting in a more reachable distance, + variation of cause.
Originaly i was orienting on an average car for the number of gears (5). 4 just worked nicer with the fingers on the keyboard. 3 probably gives to few options.
The money bit confused me at first, but I guess its more of a genre thing. As far as I know, money can easily be used as points in a racing game. The problem should only appear if you have an spending system in the first place.
Btw sry if I sounded rude. Didn't mean it like that. ;)