beyond the quarter mile - 400mph?

Top fuel dragsters hit over 300mph in the quarter mile.  But what
could they do over a longer distance? If you took one out to the
Bonneville salt flats and kept it floored until it blew (or ran out of
fuel) could you get to 375mph or 400mph? Maybe you would need a
differential gear set up to hit 400mph at maxa revs?

How fast can a piston-engine car go?