Love the idea of what's going on here.

Really feel like it could benefit from a little more user-intuitive feedback. 

Even having read the instructions, and seeing my stars go up (if I took my eyes off the road,) I still kept forgetting that I was being rewarded for going FASTER specifically.

I mean, it's a racing game, it's obvious the objectives are "Drive clean, go fast."

But still I feel like the visual/audio feedback for doing the proper thing, reaching and maintaining high speeds, isn't fully conveyed to the player. 

Not being negative, just really like the idea of what you have here and trying to figure out what is not making it "pop" for me. 

Keep up the good work love it!