[Threshold]

This happens a lot on my server, basically you need to do checks under OnPlayerDisconnect and under the command /v. For example:

pawn Код:

CMD:v(playerid, params[])
{
    //Whatever you have here
    if(PlayerCar[playerid] != -1) //If they have a car spawned
    {
        DestroyVehicle(PlayerCar[playerid]); //Destroy the car they have spawned
        PlayerCar[playerid] = -1; //Reset for debugging purposes
    }
    PlayerCar[playerid] = CreateVehicle(...
    //Code continues...
}

Same on Onplayerdisconnect...

pawn Код:

public OnPlayerDisconnect(playerid, reason)
{
    if(PlayerCar[playerid] != -1)
    {
        DestroyVehicle(PlayerCar[playerid]);
        PlayerCar[playerid] = -1;
    }
    return 1;
}

Also make sure you reset the variable to an INVALID_VEHICLE_ID OnPlayerConnect.