This 1999 Cadillac Eldorado (VIN 1G6ET1291XU609263) was modified in 2000 by Mosler. Called a TwinStar, these were named for the added 300 HPNorthstar V8 driving the rear wheels in addition to the existing factory FF layout, making for a twin-engined all-wheel drive package. This one is said to be one of five converted, which apparently sold earlier this year at Auctions America for $45k. Find it here on eBay in Fort Lauderdale, Florida with reserve not met, and here at the dealer’s site for $39,900.

As linked in the ad, Car and Driver reviewed the TwinStar when new, and it seems their impressions of the car were overall positive. They also provide lots more interesting technical info than found in the ad’s description. Regarding the car’s modified proportions, C&D deem it peculiar and we wholeheartedly agree–the wider rear fenders and exaggerated wheelbase are certainly not easily missed. As a partial saving grace for the awkward but undeniably interesting design, side scoops are most likely functional.

Needless to say trunk space was lost with the conversion, but as the linked review reports, interior space was relatively unaffected other than the CD changer’s relocation to the package tray. Immediately noticeable is the added digital gauge cluster where the glove box once was, with a tach and temp gauge mounted separately.

The engine driving the front wheels is a stock 275 horse 4.6 liter Northstar V8, while a 300 HP unit lives in the rear. Ignitions are separate and shift times are reportedly independent as well, with two separate 4-speed automatic transaxles driving each set of wheels, respectively. The seller provides a short video of the car being started and running, and curb weight is quoted at just under 4,500 lbs with a top speed electronically limited to 126 MPH–0-60 times are respectable at around 5 seconds. See the Car and Driver article for full specs.

Weird, wonderful and completely impractical, this one sounds like fun to us. Despite the lack of top-tier performance, this modified Caddy has all the makings of a niche supercar. We’ll miss Mosler, even if their later cars finally lost the skewed sense of aesthetics promoted by their earlier models.