I'm not sure that it's even that hard to build. You've seen the technology before on other cars.
For example, every 4-wheel drive truck has a 'transfer case.' That's a polite way of saying "front wheel transmission." If I'm not mistaken, it represents 1950's technology.
As for the front streering system, the Mitsubishi 3000GT (and the rebadged Dodge Shadow) were advertised as a "four wheel drive, four wheel steering" sports car.
So technically (yes, I know...) if you used the Mitsubishi wheel steering mechanism coupled to a transfer case, you'd have a six wheel drive automobile.
Since no new ground is being broken, there's a good chance the thing is being built for style.
But the way the front end would grip, it might be a good design for competitive "drifting."