It's a fantasy race spawning tens-of-thousands of auto fan-boy arguments: Which super car wins in a balls-out drag race — the Bugatti Veyron or the McLaren F1? Top Gear found out last night. Now it's our turn below.

So which wins — the 1001 HP Bugatti Veyron with all the techie bells and whistles? Or the 627 HP McLaren F1 thanks to a 1,500 lb lower weight? Warning to any of you kids who've Tivo'ed or in other ways haven't yet seen the full episode — there be spoilers ahead. So watch at your own risk.