It's very real. I was looking for an answer to PT's latest trivia on energy weapons and came across a website called something like, "neatogizmos" or something like that-- spent the last fifteen minutes looking for the link to no avail.
The treads have been out for about 6-7 years, I saw them on horsepower t.v. around that time-- they lock onto the normal lugs, as inspired by a drawing the inventor's son drew.
Originally intended for mudflats and sand dunes, they've more recently been accomodated to arctic ventures.