I love the truck selection screen! It really sells the vibe of the game. Well, it also make me thinks the game is about running over zombies with a truck though. The town also looks a little bit empty.
I think the game need to show the ring after the next ring instead of just the next ring. In the third stages, I wasted a whole minute doing a U turn after I took a wrong turn because I didn't know where the next ring is. Besides that, I also experienced the known issue.
That being said, I actually had fun playing the game. Good work!