[1] see, eg> http://www.digitaltrends.com/cars/morgan-three-wheeler-is-it...
For example in the UK we had a mass-market three wheeler called the Reliant Robin, which was culturally considered to absolutely be a car (albeit a car worthy of having jokes made about it). http://en.wikipedia.org/wiki/Reliant_Robin
It is markedly different from most mainstream cars due to its fibreglass bodyshell and compact three-wheeled platform which allow it a special taxation and licensing class under British regulations.
Also, the Morgan I linked to is British and is very capable--far more so--as a piece of engineering.
My guess is that three-wheel regulations were originally set up for motor-cycles with side-car. These evolved a seperate lineage of both engineering and regulation. For modern examples, see: Can-Am Spyder.
I think what threw me the most was how SI and US units were mixed right in the title (liters and miles).
Flipping through the rest of the site, it does unfortunately read like they're just churning out content to draw search traffic primarily for advertising.
Sounds like most online news sites. And I see many errors (uncorrected typos) in articles written by professional journalists using their first language, and even after a proofread from an editor!
"That’s pretty amazing, isn’t it? Yes, it is!"
Here's a slightly better one with a video: http://wonderfulengineering.com/new-car-designed-by-french-s...