command(vehrespawn, playerid, params[])
	{
		#pragma unused params
		if( Player[playerid][AdminLevel] >= 5)
		{
			for(new i = 0; i < MAX_VEHICLES; i++)
			{
				if(Vehicles[i][GameID] >= 1)
				{
					SetVehicleToRespawn(Vehicles[i][GameID]);
				}
			}

			SendClientMessage( playerid, WHITE, "All saved vehicles have been respawned." );
		}
		return 1;
	}

forward RespawnCars();
public RespawnCars()
{
   new
      needed[MAX_VEHICLES],
      i,
      v;
      
   while(i != MAX_PLAYERS)
   {
       needed[GetPlayerVehicleID(i)] = (IsPlayerInAnyVehicle(i) == 1) ? (1) : (0);
            ++i;
   }
   while(v != MAX_VEHICLES)
   {
       if(!needed[v]) SetVehicleToRespawn(v);
       ++v;
   }
   return 1;
}