If your Maverick isn't there, you could go to the back of your mansion and get into your Sea Sparrow, but it's pretty hard because the Mafia keeps shooting at you. Fun, anyway.
And I forgot, the Sea Sparrow only spawns there once you get 80 hidden packages or something.
South Park, Charmed, Buffy The Vampire Slayer / Angel, Tru Calling, Family Guy, TrippingTheRift, FreeForAll, Futurama, Jackass, Lost, That 70's Show, Celebrity Deathmatch