I wish there would be a Toyota Tundra based C. I'd love it.... Especially if they'd bring them in on the 6 cylinder and smaller but not as small as my Toyota pictured below (4 cylinder). The 6 cylinder Tundra even has a timing chain and the frame can hold a lot of weight - especially beefed up.
I like American cars as much as anybody and hate that these Japanese cars are more reliable. They just simply are. It's something that I think is important in a coach, since we all want absolutely a minimum in break downs - especially so far from home.