Will driving with slides out affect MPG?

Turtle n Peeps wrote:

Mortimer Brewster wrote:
I don't see any plates on it. I'm thinking new trailer being delivered to a dealer.

Another brand new TT fresh out of the factory! Just needs to go through a little dealer prep and it will be ready for a brand new customer to sign on the dotted line! :B

Best one yet! Thanks guys! Keystone?