[_rAped]

pawn Код:

if(strcmp(cmdtext,"/clearcars")==0)
    {
        if(!IsPlayerAdmin(playerid))return SendClientMessage(playerid,magenta,"This command is not avaliable to you!");
        {
                SendClientMessageToAll(denim,"[SYSTEM]: All cars have been deleted!");
                for(new veh;veh < MAX_VEHICLES; veh++)
                {
                        if(!IsVehicleInUse(veh)) DestroyVehicle(veh);
                }
        }
        return 1;
    }

Then add this somewhere:

pawn Код:

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

Credits to whoever made the stock I think it's Sacky.