Interesting concept. The music is really nice, but doesn't seem to loop properly. Instead there's some white noise sound. Tested on love 11.3
When the static starts playing, you need to retune the radio frequency. This is done with [UP] and [DOWN] arrow keys.
Thanks for giving the game a try.
The controls are explained here:
https://tiggles.itch.io/roadtrip
Oh, I didn't read the instructions, thanks for explanation.