some are supercharged. other are turbo'd
these were turbo's per the OP and my comments..
but that's not entirely true. there are cars that can carry WAY more speed into corners.
fwd usually can. ie the ST class favorite, 89 prepped civic si's
also check out how much speed an elise can carry into and out of a corner.
on a good autox course there aren't any "straights" well at least not perfect straights!
most of the time the experienced drivers can find a straight that LOOKS like an offset.