Stop in for a cup of coffee

Anybody ever mess with vinyl to cover a large area? Like a car roof? Not the "We don't want to waste good paint on the roof" kinda vinyl like the '70s. Modern vinyl. I'm lookin' at a Mini S that has an English flag on the roof, not the Union Jack kind
th?id=OIP.jpg this kind.
Little car looks like a vertically challenged ambulance. Thinkin' vinyl might be a good way to remedy that.