Great idea and in theory would be a practical and useful addition for every family....BUT the pages are a very flimsy plastic and I think would have a very hard time taking documents for 2 cars let alone the 4 they say it can. As well as flimsy and few pages, it lacks space for anything other than the basics, MOT, insurance, driving licence, registration papers... there isn't anywhere for things like repair receipts, radio security unlocking code cards, parking permits etc etc.....SO... you will still have to have another folder/ file to keep at the other things together... as I said... a great idea if more thought had been put into it and better quality pocket/pages...Saying all that, it is a useful thing to have alongside another file for all the other car documentation you will have.