The design of a tricycle seems to be pretty good at keeping toddlers from falling off, so one would assume that it's a fairly stable system. So why haven't we seen more three wheeled vehicles made for adults, who are capable of spending way more money on ridiculous things?
The i-REAL was slated for sale this year. As these products demonstrate, Toyota is gallantly ignoring all of the handicap ramps, chair lifts, curb lips and parking spaces in the world to operate under the assumption that motorized chairs are both practical and ideal.
Unfortunately for Toyota, the i-REAL has virtually no selling points. It's, what, a more comfortable Segway? A slow motorcycle that won't impress women? One of the only vehicles ever made that offers zero frontal protection for the driver?We're not engineers over here, but we're going to go out on a limb and say that taking a corner with just one wheel to balance all the weight on the front of your car ups the likelihood of tipping over and rolling down the street from "possible" to "guaranteed." And we're thinking the odds get worse the faster you go. Basically you can only drive the Robin slowly and in a straight line, so it's best not to purchase one unless all of your errands are directly in front of you and are never an emergency.
Another noteworthy attempt is the Sinclair C5, which we have to give credit to for sticking more closely to the classic tricycle in design.The Sinclair is best described by the Sinclair C5: The Site for Sinclair C5 Enthusiasts Worldwide, which states, "The Sinclair C5 was a commercial disaster." This is the first line on the group's website after the name of the website itself. We can't imagine why.
Well, there's the fact that your body is exposed and that your head winds up right around the area where the grill of an SUV would be, so if you forget to check your blind spot and merge into a Chevy Suburban your skull might be torn from your shoulders. But other than that...What isn't disappointing is the dynasphere, a giant hamster ball they tried to develop back in the 30s.
Understandably, this never took off -- the automobiles being manufactured at the same time were way more practical and functional and didn't require you to lean out the side like Ace Ventura to make a sharp turn, so the dynasphere lost out like Beta to VHS. Oh, what could have been.
The other problem was that the railplane didn't actually go faster at all, and in fact was pretty goddamn slow. Also, the steam generated by the trains running underneath it would make it shake around like a Yahtzee cup. This isn't even mentioning the safety hazard of having a large four-bladed propeller come roaring through a crowded platform. The project went bankrupt in 1937.