This game brings back a ton of nostalgia for me from old games like Dave Mira Pro BMX and Thrasher Skate and Destroy. You implemented this game very well. The subtle control you have over your character while you're flying through the air and the strategy of figuring out how to line up vehicles just right. It plays nicely. I'd love to see this expanded out to have a little city you can run around finding fun interactions with terrain and buildings.
My only suggestion for making it feel better might be something like a "flop" mechanic that you can do a limited number of times once you're on the ground and _juuuuust_ out of reach of a car in the other lane. Just something to help the player feel more in control.
After a few tries of figuring out how to optimize, I managed to get $417,260.10! I think I'd be a great lawyer. Super fun entry. I had a blast.