Well, it would have to be dimensionally transcendental, it would work...erratically, would be the generous way of putting it, and it would look like a blue police box (but, per the first point, would of course be bigger on the inside than the outside).
Quelle surprise, I think. Wonder how many other people have made that suggestion.
(Well...if the police box isn't available, I'd go with a DeLorean. But I'd be thinking of the police box.)
