Beyond the dealership, there are hidden cars scattered around the map. Some are free, some require quests. This guide shows you where to find them.
Behind the gas station, there's a rusty red muscle car partially covered by bushes. Click it repeatedly until the engine starts – you'll unlock it for free.
Under the pier at the beach, there's a yellow buggy hidden in the shadows. No quest required, just claim it.
Inside the police station garage, you can find a police car. Unlock it by completing the "Speed Trap" quest (catch 5 speeders).
Behind the museum, there's a classic convertible that spawns only at night. Click it between 10 PM and 5 AM in-game time.
Spawns randomly near the playground. If you see it, get in quickly – it despawns after 2 minutes. Once you've driven it once, it's added to your garage.
After unlocking a hidden car, drive it to the dealership to save it to your garage permanently. If you don't save it, you'll have to find it again.