Absolutely! I wouldn't put it past them.
I'm not a big fan of fast-food, primarily because it's cheaper for me to cook at home, but do occassionally "indulge."
Lots of times it's just easier if we are out and about to hit the drive through, rather than going into a sit down place - especially with a 6 year old!!! I'd much rather let her eat a Happy meal in the car and then take her to the park then have her get all antsy waiting for table service.