Inflected Form(s): commutersynched, commutersynching
1. a situation in which a person or persons in an adjacent vehicle is singing along to the song playing in your vehicle
2. an attempt to find the song that a person or persons is singing in an adjacent vehicle
"Dude, I was totally commutersynched on my way home from work today."
"That guy is belting it out- let's try and commutersynch him."