Remember the car from Dumb and Dumber?

Our neighbors have two vans than appear normal from a distance, but up close...

You can see they are covered with carpet. Questions leap to mind. How do they
keep them clean, with a Bissell? Actually, WHY is the question that typically leaps to
mind every time I see this van and it's
bright blue counterpart. The license plates
indicate these beauties are from Wisconsin. Maybe they get cold up north.
Speaking of license plates...