Bought it online. Left it somewhere during a mission, its not in my garage, not in my vinewood garage (the one that houses newly bought vehicles), not at the impound..
Seriously, this new car system is f*cking horrid. Leave my damn car where I left it, don't teleport it somewhere when I step 10 feet away. I drove to the beach and wanted to jetski around a while (Stayed in the same area, didnt stray far) and when I got back it was gone.
Purchased a lot of upgrades for it too. Now it's gone and I can't seem to get it back anywhere. What the f*ck, rockstar?