[Grimmjow doesn't have a sword in this form, just his claws... and they're really not big enough to carve through a car without using his strongest attack. Sephiroth hasn't earned that yet -- only Ichigo has.

So when Sephiroth cuts through the car himself, he finds himself confronting an empty space. Grimmjow had backed off a few yards, and under the cover of metal cutting through metal, he's powered up another Gran Rey Cero.

This one is weaker because there's less time for it to build energy, but it's still violent as it goes off.

And backfires a little, too, tossing Grimmjow back with the unexpected fluctuation from firing it off early, and he disappears into a nearby building, leaving behind a large hole.]