Lyric discussion by lovelylies 

Cover art for Car Radio lyrics by Twenty One Pilots

I think it's about him losing the radio and music (a distraction) from his suicidal thoughts, and how he gets worse without it, "I hate this car that I'm driving" shows that driving is a pain without music.

"I hate this car that I'm driving There's no hiding for me (distraction) I'm forced to deal with what I feel (suicidal thoughts) There is no distraction to mask what is real I could pull the steering wheel (could kill myself)"