How about you remember where the car was when you quit a level so you don't always have to start at the beginning. It makes it tedious starting from the home position while exploring. Also, how about recoding the orientation of the car so when you refresh the car, it's facing the same way. Also, why not add an odometer. It would make exploration and competition much better. You could have challenges that say, turn right, go 3 miles, then turn left and go 1.5 miles, etc. Just a couple of thoughts.
