Just finished playing, I figured out the premise after crashing into a tree (lol). This is like the "making pokeblocks" game in PKMN Emerald. To reach your destination you have to travel the 50miles that it tells you in the rear view mirror, to do so HONK the wheel to land on either the "knobs" that flash blue or the lightning bolts that flash yellow, doing so lowers your miles to go. Hitting the skull 3 times is a game over.
IMO loved the music, and the use of theme is very on point.