Dude, this is your first jam game? I see great things in your future! Like, you DO have some coding background right?
As I was playing this game, my wife came by, noticed it, and after I explained the premise she said she liked it, and it makes her laugh. So yeah. High praise from both of us.
Some additional stuff:
I'd like to have more "street" in this game. Would be cool if you had some slightly more detailed ground during the gameplay.
I had to reset the game twice, before upgrades worked. The upgrade buttons didn't register clicks until the third time (I played on web build btw).