Even with dealer car sales there's usually a 48 hour or so grace period where if you realize you made a mistake, etc. they'll take it back and annul the sale.

Even with dealer car sales there's usually a 48 hour or so grace period where if you realize you made a mistake, etc. they'll take it back and annul the sale. I imagine for a purely online sale there'd be a similar agreement and they just pick the car back up.