Do I permanently keep vehicles from the Auto Fixer website / station?

[KliPeH]

Most cars and bikes in the catalog cost a small fortune, so I imagine once I purchase them I will be able to call them from the menu at will? I tried looking this up online but didn't really get a conclusive answer. Thanks for the responses in advance!

[Phynrae]

Yes. You buy, you own.

[asarokk]

Yes, any vehicles you buy from the Auto Fixer or receive as gifts are yours.

Default key to call your vehicle is V. Pressing once will summon it and holding it down will bring up your inventory with a list of all the vehicles you own.

[Amanoob105]

Yes, once brought they are yours for good and can be summoned the same as all your normal cars. Not sure how you couldn't find a conclusive answer about that....
You get access to more options as you level up and (assuming you have the DLC) from doing more of El Capitans vehicle jobs.

The same is also true for a number of vehicles you can get from quests, rewards and sometimes even just found out in the world.

[KliPeH]

Thanks for all the answers; I figured stolen cars cannot be saved so the devs would likely give you an alternative means with which to obtain permanent vehicles, and I imagined the Auto Fixer catalog would be just that.