No, the equivalent is eating your meal in the toilet.

I'm from the US and always have had a car but since highschool have spent any "social time" like lunch locked in a toliet stall because I am terrified of people and people don't seem to like me either.

I also eat in my car but first need to drive to a secluded spot.

I've eaten in a car before but I think the major difference from a toilet meal is that eating in a car is actually comfortable (I can recline, play music, etc) and that you can still be seen. Whereas the purpose of a toilet meal seems to be mainly to hide and preserve your social image.

There's a solitary joy to a nice car meal. I'm not afraid of people, but I like the privacy of having a meal in my own car versus a fast food restaurant's dining room (doubly so since COVID).

I see people eating off their hood fairly often. Or it's not even their car, who knows.