The purchaser can always rent a tow dolly and tow it off. In the states anyway, towed vehicles don't need tags or insurance. If the purchaser(s) have access to a 'closed area' - like a private industrial park or such - they can 'road test' to their heart's content, as it's not open to the public. There was a court case a few years ago here, where the owner of a parking lot hired someone who was on a 'revoked' license to park cars. Customers were not allowed to enter the lot. You brought your car to the entrance, and the staff would whisk it away and park it. When you returned, you presented your claim check & the staff retrieved your car. The cops claimed that the hired person could not legally drive. It turned out, since the garage was private property, that the owner controlled who could and could not drive on his property. The general public, in fact was NOT allowed to drive there. The case was thrown out. Cheers.