Looks like a refinement of GM's "The Lean Machine"...
from the 1980s.
Here are a couple links:
3 Wheelers
3 Wheel Cars: Primary Factors That Determine Handling & Rollover Characteristics
Like many ultra high mileage vehicles, the one you showed could meet the needs of a lot of people but aren't viable for others. I wouldn't have one in Colorado because my car has to be able to meet all of my needs, not just when the weather is good. In sunny climates, CLEAVER could be terrific. Most of the year, it could meet my needs. However, it makes no economic sense for me to have a "good weather" and a "bad weather" vehcile. Plus, the weather has a way of going from good to bad very quickly here.
