Fair enough. It doesn't all need to go on the roof rack though.
Some of it can be cut into smaller pieces (roughly to size) and placed inside a car, unless it's full of people.
Alternatively, HandyAndy is doing precut packs now, they would easily fit into a car (across the back seats)
http://www.haynes.co.uk/forums/showp...2&postcount=39
Bit more expensive, but doing all of those cuts is time consuming
Sean