[boelie]

Code:

RespawnEmptyCars();
public RespawnEmptyCars()
{
for(new i=0; i<MAX_VEHICLES; i++)
{
for(new pl = 0; pl<MAX_PLAYERS; pl++)
{
if(IsPlayerConnected(pl))
{
if(!IsVehicleInUse(i))//if(!IsPlayerInVehicle(pl, i))
{
SetVehicleToRespawn(i);
}
}
}
}
}

Edit:

Code:

stock IsVehicleInUse(vehicleid)
{
    for(new i=0; i<GetMaxPlayers(); i++)
    {
        if(IsPlayerConnected(i))
        {
            if(GetPlayerVehicleID(i) == vehicleid)
            return true;
        }
    }
    return false;
}

you need both to work