if you keep tabs on the feature documentation on our forum, I'm sure that you've noticed the garage system that was announced earlier this year. As of version 5.4.175, the update's been implemented.
Right now we're in the process of assigning garages to houses and businesses. Public / personal garages will be added shortly; some of them will be auctioned off. If you own a house that has a garage on its exterior, you can request it to be scripted [Read more]