How many rolls of saran wrap to wrap a car?

well I went out & bought what you have cause I'm too lazy to do math & it covers my neighbors doge neon just fine & I didn't even use 2 rolls. great prank by the way its snowing here in clarksville indiana, & I can't wait to find out what the Andersons do when they come home from vacation & are suprised when they find out snow isn't the only thing they'll have to get off their car in the morning! lol