Fatbax was a series, which debuted 2004 in the First Editions series. All 10 cars had giant rear wheels and tiny front wheels. The cars itself were wedge-shaped and often had exaggerated engine sizes. Because of their large rear wheels, they could not fit on hotwheels track, and could only work on very few playsets.

The cars with this odd design caused a financial loss for Mattel and the sales of Fatbax cars were unsuccessful. They were found in stores in 2005. Fatbax cars will never be produced again.

The rear wheels have all the same size on every Fatbax model.

Pictures:

Duplified (Fatbax) (New Casting)

C6 Corvette (Fatbax) (Issued as: 2005 Corvette) -> C6 Corvette

Plymouth Barracuda (Fatbax) (Hot Wheels original casting -> '70 Plymouth Barracuda

Silhouette (Fatbax) (Hot Wheels Original 16 casting -> Silhouette)

B-Machine (Fatbax) (New casting)

Jack Nabbit Special (Hot Wheels original casting; -> Jack Rabbit Special)

Toyota Supra (New casting)

Exhausted(New casting, based on a Twin Mill)

Fatbax Shelby Cobra 427 S/C (Original casting -> Shelby Cobra )427 S/C)

Fatbax Mustang GT 2004 (New casting)