Could be. Slides everywhere these days. My Grandmother had a mobile home that was called an "expandable" home. Put it in place, level, and two people with hand cranks would open it up to the full width, about the width of today's double wides. Haven't seen one since. This was many years ago.
Charlie & Lizzie the Mini Dachshunds
2008 Jayco Eagle Super Lite 30.5 RLS
2006 F250 XLT Xtra Cab Long Bed 6.0 Diesel
24 hours in a day, 24 beers in a case. Coincidence? I think not.