What would you use to clone it?
In no way would I ever imagine Button would possibly consider doing this, but his ItsaBitsa Morgan doesn't have a pukka Morgan identity, it's been put together out of bits and pieces from other Morgans.
IF an unscrupulous ne'er-do-well (i.e. not Button, who is a thoroughly decent and upstanding citizen) got hold of the car and wanted to add a few quid to its value, then cloning another Morgan would be an easy route to do so.