Originally Posted by niceworkbavaria
The current M3 with about 500lbs shaved off of it would still need nearly 414hp to achieve the same top speed. Above 120 mph or so, weight becomes almost negligible as the aerodynamics of the car start to be the biggest factor is top speed. Obviously, lighter weight helps a ton with acceleration under 100mph and cornering/braking at any speed. My point is, give me a few hundred pound lighter car, but keep the same HP!
I think the best (and fastest) example for this is the McLaren F1 vs Bugatti Veyron drag race: