When I first logged on after updating to 1.06, I had four new vehicles in my garage ... the little dune buggy that I'm guessing is from the Beach Bum pack ... a Chrome Ocelot with my crew label (wtf????), another beach kind of vehicle, and what I believe was a modded Sand King.
My fully upgraded 9F, on the other hand, was gone.
When I went back to Story Mode, then returned to Online, the garage had corrected itself ... and now I'm a little sad that I didn't drive those suckers around a little.
Were those cars from another person's garage, maybe, and they just glitched into mine by mistake?