I think that a hotdog would be considered a taco if you had to choose between the two, but would be its own category in my eyes. Since the bun is wrapping itself around the meat, and only covering 1 side of the hotdog, I would consider it a taco. If there was another hole on the other side of the bun I would consider it a sandwich. I don’t really eat hotdogs, but this is my opinion. :)
Chris (uglees)