Examples may include waxing washing and car several times a day, staring for long amounts at a time, mentioning the car in most of sentences said in a conversation, reffering to the car as "baby" or "honey" or"she/her", having a cover for said car, putting a prop up tent for said car, etc
B: Have to make sure my baby doesn't get scratched
A:Aren't you supposed to meet your girlfriend soon at the movies?
B: What? Who?
A:I think you're too attached to your "girlfriend car"