I have no idea the algorthym for the Random Garage photos but certain ones come up repeatedly where's others rarely seem to. Maybe if I park myself on here for 24 hours I'll see everybody's garage but so far I've got other plans for my life. Personally I've noticed Beken's a lot. Not that there's anything wrong with Ken's cars but it is kind of strange. Almost like product placement Not complaining, just commenting
It is truly random. Each time the page is called for each user, including guests, a script is run that picks the garage(s) to be displayed. The previous selections are not saved so it is possible that the same garage is picked on the next refresh. The more garages added the better the probability that a different garage will be displayed. I'll share the code if you want...