You guys are bashing on 222mph, but you do realize it's not a standing mile, or an open straight stretch of pavement... it's a fucking ring. You have to turn.
http://bbs.keyhole.com/ubb/download.php?Number=46114 - Google Maps
222mph is certainly not the top speed for that car, just the highest speed they got it to while keeping it on the track. That's fast. Really fast. Try and find anything this side of an open-wheel F1 car that'll do that. Le Mans cars certainly won't, because of racing limitations... that's why Smokey says he doesn't build race cars - no limits!