Anybody ever thought about building a trike with the rear 2/3 of a twisted twin as each rear drive wheel? Two engines & drive trains. One front forks/wheel. Low slung Miata seat almost between the engines. Sychronization of the two engines would be highly desirable I'd guess, but what a beast it could be! Synchronizing shifting might be the biggest challenge, an uneven shift at 50 mph would probably be the end of all. Stretched length for directional stability. Just musing. I don't know where these ideas come from, I really don't!