A quad to me is all the disadvantages of a bike and all the disadvantages of a car rolled into one...you get wet, you can't filter through traffic, you crash you get hurt a lot, you get wet, you can't park where ever you like...you can only have one passenger...hmm
My mate bought a quad and here's some **** he pointed out, quad tax is more expensive than a car and quad insurance is the same as a car. If my memory is right, the tax was £130? I might be thinking of the wrong thing but either way it was pretty high.