Good game! The chase camera really is cool! makes me feel like i'm going really quick! The driving is a bit hard without guard rails but it was fun none the less
Honestly you could go with lots of different ideas, like maybe the whole game is that its hard to drive so the railless road is like rainbow road in mario kart, or maybe you add some driving stunt "puzzels" where you have to do a stunt to keep the road appearing in front of you. Its got potential.