1969 Miller Meteor Landau Combo

Looks like another over zealous and under informed seller to me, but I like the color.
https://www.ebay.com/itm/1969-Cadillac-Other/124134055091?hash=item1ce6f75cb3:g:g8QAAOSw6TxegFst

I have seen photos of this one in the past. The rear floor(which they have no photos of in this listing) looks like termites got into it. The plywood floor by the rear door is destroyed. This thing should be an $800 coach...…. on the top end.

How hard is it it get it to run off a gas can?