Re: Who says Americans can't build exotic supercars. More drivel from Mr. Gwynne... "I mean the fact that the M5 engine is more refined, has better throttle-response and is more reliable than the LS engine." Show me where the M5 engine has definitively proven to have better throttle response and reliability. Just out of curiosity, do you know how much an M5 engine costs? How about an LS6? "Look at Ultima, a company similar to Mosler in that they are a small group of people who build lightweight, powerful cars for track and road use using other people's engines. They offer the Chevy engine as well. But for those customers who are willing to spend a little more, they'll also use a Ford quad-cam V8 which produces more power from less displacement and approximately the same weight." And notice how on their website, they list the most impressive performance figures from the Chevy 350. The Ford quad-cam V8 is approximately the same weight? Says who? "About 400 lb/ft if you're talking about the Red Rose version of the 4.5 liter. Admittedly the ordinary 4.5 liter incarnation only produces about 380 lb/ft but that's still better than the LS1 engine that is fitted to to Mosler. And that was the one we were discussing, was it not?" The Cerbera does NOT produce 380 lb/ft. That's TVR's marketing rubbish at work again. It's closer to 330 lb/ft. Take a look at the power graphs below. 1st one is of an early Red Rose (there's only been one on record that has produced over 430 hp): 340 lb/ft. 2nd one is of a standard Cerbera 4.5: 301 lb/ft 3rd one is of an above average standard 4.5: 343 lb/ft UNLIKE the TVR, the LS1/LS6 puts out what it says on the tin. "The Mosler uses the LS1." It uses the LS6.