There's not a lot of food trucks in the area, but there's a lot in the state that come to the bi-monthly foodtruck rally around here.
They do Seafood, Thai, Korean, Vietnamese, Filipino... Mexican and a lot of other dishes. Vegan or non-Vegan if they're really good at prepping their stuff and knowing their customers. I'd say go with what you think you can sell as a REALLY good prepared food and maybe mix in some flavor/fusion of other countries or your heritage in there. Mexican Waffles? Could do. French Tacos? Could do.