Nice idea. I could see this being re-themed to an astronaut traversing a meteor shower and having to fix the hull plating. I agree it's a little easy. If you wanted to continue working on it, perhaps you could add some monsters that come at you when you get out of the car to minimise the time you can spend fixing things. You could also add more obstacles, some of which do more or less damage.
Trijam #203: The 3 hour game jam » Entries » I Took a Wrong Turn Somewhere, But Luckily I Am a Car Mechanic! - Trijam 203