Art is pretty cool for the car and environment
The UI is a bit much, kinda fills up the whole screen.
Getting out of the car is neat but the UI is in front of the player which is a bit annoying. Hitting the zombie and having to use the wipers was funny. When getting out of the car, it'd be nice if the zombie kept walking so I don't have to wait still.
I like what you're going for, having the two different gameplay loops of driving and then shooting zombies. I think you need to clean up the UI, probably remove a bunch of things that aren't relevant at first, and then slowly introduce them.