My OverCamp (brought from the Lofty Shelter two years ago) is bolted to the modified wood beams/metal tubes on my custom M416 trailer.
Putting on the truck roof is very difficult even for two six footer. Suspending from the garage ceiling is out of question because my truck is only six inches from the garage door beam so it can't be installed on truck roof and then roll out outside.
As for camping, I would upgrade to "large" OverCamp instantly for my growing family but I'm not sure why AutoHome don't manufacture this model. They labeled my OverCamp as "meduim" on thier bochures and web site. It gives out the impression that there is a large OverCamp but it isn't? BTW, largest new OverLand is only 20cm wider than my meduim OverCamp.
Eee this link and you will notice that 'large" is missing from selection of OverCamp.
http://www.zifer.it/file_gb/tendeaconfronto.html
Cheers,