Sonic (the restaurant chain) sells chili dogs.
Sonic's (the hedgehog) favorite food is chili dogs.
With 30 years of co-existence, Sonic (the hedgehog) and Sonic (the restaurant chain) have never had any sort of promotional deal, despite the glaringly obvious set-up.
@MFusion245
Hard to find but years ago there was an article about some controversy at the restaurant someone brought up the game character and they real quick chopped it down to, "We do not want to get involved with the game franchise."