Dude, This is EPIC. I will be building this car for sure. Fun physics and premise!
Edit:
So I build the car and got out of dodge. the energy and aesthetic are real fun. Couple things I think would be cool!
-being able to shoot behind you while running
-Faster zombies, beer also temporarily boosts speed?
-Baseball bat knocks zombies backward farther.
-There was one lamp post in the back left of the map that I got stuck on/under. Zombies pushed me out.
This game has potential! Sick.