A lot of interesting ideas here! I like the concept of only being able to hit or collect things above a certain speed, but I only discovered it by reading the comments, it's not explained in game and during my first run, I was running slowly and thought the collisions didn't work.
Also, at 35 mph, the car takes too much space on the screen and the scrolling is too fast to be able to anticipate the hazards.
One last thing, I think the colors of the bags should match the colors of the corresponding stat bar, it would be more intuitive (for instance, red bags should restore health to me).
That being said, this is a super neat game and I had a lot fun! It's well put together and has lots of potential.