Yeah, Fred will have it

... is obviously how this "collection" started out, this is a glimpse of what can happen when you end up collecting cars and vehicles, one begets another and another and eventually it becomes  so out of control you have to call it a museum to get away with it!    Come to think of it, with Nod being a horder he should have just opened his house as a museum, then the world could have. marvelled at his plastic pots collection!
 I wonder if it was only the lack of a vehicle route round the back that stopped Duncan and AL from starting a "museum" of their own in the back garden....

b