[XtremeChio]

Then you should add cars by AddStaticVehicleEx. It respawns them after % amount of seconds that you choose

Add them under OnGameModeInit - They will save when you restart and they'll ALWAYS spawn where you chose.
To add cars, go in game, type /save and you'll get the coordinates for the car. Put them in the AddStaticVehicleEx code etc.

https://sampwiki.blast.hk/wiki/AddStaticVehicleEx