Me and a couple of friends from Merry Old England are planning an expedition to the US, and would love to travel the whole width of it via a car. As we're all under 21, we realise we can't rent a car, and so hope to buy one. Except the question of insuance looms (costs, restrictions, etc.) Any idea of who we should contact about this, and any other pointers would be of great help. Many thanks