This was fun! I had to try a couple times to realize that the jump was the optimal way to traverse, since it prevented me from tipping over. The low-fi aesthetic worked well, and I liked how intuitively the car controlled - the physics and driving felt very good. A quick restart after falling off or ending up upside down would've been great. The music was also cool!
I wasn't sure if there was meant to be a sound effect associated with the scream'n'jump; first time I'd press space there'd be a short freeze after which things would go back to normal, but there were no sound effects then or later. Also it seems that the game window is half the intended size in the browser version (using Firefox).