Mercedes-Benz SLR McLaren.
|The SLR McLaren overshot its weight targets by a mile, was far too large to be enjoyed on twisty country roads, and even its own designer hated the F1-inspired nose grafted onto its simplistic body. The auto makers went their separate ways and produced wicked hot supercars ... namely the laser-precise McLaren MP4-12C and the burly Mercedes-Benz SLS AMG.|
Mosler Consulier GTP.
| Warren Mosler set out to create the fastest street-legal track car on the market. Based on a fiberglass-and-foam monocoque design, the Consulier GTP was finished with a bag full of components from Chrysler. |
The remnants of Mosler were offered for sale last year.
Panther 6 Year produced: 1977.
|In 1977, Panther Westwinds founder Robert Jankel unveiled the Panther 6 to an incredulous public, claiming a 200-mph top speed courtesy of its rear-mounted, Cadillac 500-cubic-inch V-8.|
It failed spectacularly, and only two units were built. No Panther 6 has ever attempted a run at the claimed velocity, which is good, given questionable aerodynamics and weight distribution.
Ferrari 612 Scaglietti - Years produced: 2004–2011.
|Bloated in every direction, the 612 is stretched along a 116.1-inch wheelbase and is a full 193 inches long, and rises 52.9 inches from the pavement.|
The front end is a mess of intersecting lines, the side appears to be sagging, and, tragic for a car capable of blowing other cars into the weeds, the rear end is boring. Like a true supercar, it offers occupants poor visibility.
|Jerry Wiegert’s Vector W2 flabbergasted the automotive world. A Lamborghini Countach of the period could approach 200 mph, so Vector claimed the W2 could top 230. The W2 never cracked its claimed target speed, perhaps because the severely dated styling conceals a pedestrian GM small-block V-8, turbocharged and mated to a Turbo Hydra-matic three-speed automatic.|
The single example built was updated several times with as much time courting investors and battling with business partners as building supercars.
Jaguar XJ220 - Years produced: 1992–1994.
|The XJ220 debuted as an all-wheel-drive, V-12–powered concept in 1988, inspiring excited Jaguar faithful to plunk down deposits on the promised production models. Unfortunately they ended up with a car that diverged in critical ways from the show property.|
When the XJ220 finally hit the streets four years following the concept’s debut it was equipped with a more simplistic powertrain that combined rear-wheel drive and a turbocharged V-6.
Gumpert Apollo - Years produced: 2005–present.
| Every Apollo produced has massive panel gaps and poor assembly quality, and the car has an interior cobbled together with a random assemblage of generic parts. For this you’ll fork over a minimum of $550,000, but at least your car will look like an intergalactic spaceship. |
Gumpert recently filed for bankruptcy.