Where can you save cars in GTA 5? (Grand Theft Auto 5)

It caught me after the mission, a good black jeep with high suspension in General, rare,garage for 4 cars full,if you pull one car this unique jeep disappears,tried at home with Michael in the garage to save but and from there disappears,put on the Parking lot where the yellow striped markings near bought the club but from there he disappeared.In General prompt please,and jeep upgrade for the big bucks and lose I armored car.
Spoiler