[doreto]

CreateVehicle(modelid, Float: x, Float:y, Float:z, Float:angle, color1, color2, respawn_delay - The delay until the car is respawned without a driver in seconds);
or
AddStaticVehicleEx(modelid, Float: x, Float:y, Float:z, Float:angle, color1, color2, respawn_delay - The delay until the car is respawned without a driver in seconds);

When player exit from behicle after x seconds vehicle will be respawned.