The pixel art in the driver's seat view is lovely: the chunky steering wheel, the coffee cup and rubber duck on the dash, and the red desert mesas rolling past the windscreen. The Day 6 emergency broadcast ("the pumps ran dry four days ago") sets the tone fast, then Act I - The Outskirts gives clear goals: reach the wasteland, find fuel, scavenge a petrol station. I took The Wagon up to 76 mph and liked watching the engine and tyres already tick down from 100 to 98 within the first couple of percent of the trip, which makes every mile feel like it costs something. The car, wash, engine, tyre and battery readouts make it a proper road-trip survival sim.

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.

I liked the game overall. I think a tutorial level would helped the game a lot like i did not how to deal with damage from zombies and the UI felt a bit much but overall it was fun

The UI was a bit all over the place, this made it hard to see what was going on. Visually though the game did look good with the zombies and everything. It was a cool idea for the genre

Its not a huge bother for me, but you may want to be more mindful of how the text fits in your projects versus your other UI visuals as some people can be super picky over this. I like that there is an objective reminder, but I can not find a way to remove it from the screen as it filling most of the meaningly game play area.
Otherwise I thought you had a very interesting and unique idea. The graphics style was visually appealing, I liked the sounds that are present in the game. I wish it had some sort of background music even if soft/quiet and if the car had some sort of revving noises as if you were driving to give it more of a lively sensation for the players.

I can't wait to see any future developments of this game and how it will be reshaped with meaningful feedback from others as well!