Can cars be stored in self storage facilities?

It all depends on the company. Often times the units themselves are large enough to accommodate. But sometimes, the units are located inside of a building, and a vehicle wouldn't be able to fit. I would suggest talking to local companies to see what there policies are, but I don't see why not, so long as nothing is damaged etc.

Talk with the company as some will allow it where others will not. If you are going to store a vehicle for a period of time get a hand book for the car as there are things that have to be done to preserve the vehicle. It is not a matter of parking the car especially if you want it to work when you get back