Aw yeah. people asking the right questions. Well since my headcanon of the cars even being alive is stiles used magic to bring them to life(hush, this whole thing is crazy. no logic or canon needed. but appreciated). So i’m just thinking cruiser and jeep have spent quite a few nights just sitting on the Stilinski driveway for as long as they can remember(maybe a little longer for cruiser). but they’re like family, and the only way i could describe it to anyone was: 

Cruiser is Jeep’s friend/big brother/father/uncle.

bad influence like a friend
acts very brotherly torwards him
as protective as a father
and and just gives off that uncle feel.

I am so sorry to the people who are wondering why this blogger they’re following is shipping CARS. but i’m not sorry enough to stop. :P I’ll try to tag everything carverse. (For all your blacklist needs.)