Well when I first saw it, I thought it was a hoax too, but as it turns out, Mazda really built this strange looking critter. It was code-named the M2-2010, and was one of the more bizarre concepts to come out of Mazda's M2 design project. The project was basically given free reign to do all kinds of strange things with the Mazda range, and none of the vehicles were intended for mass production. As far as I'm aware, only one example of the M2-1010 was ever produced.
Unfortunately, the only reasonably detailed image I have is in black and white. The colour scheme of the vehicle was a pretty revolting combination of pale blue body with red side-skirts, so the car probably looks better this way!
http://www.thornber.demon.co.uk/soapbox ... pickup.htm