clearv2

public OnPlayerCommandText(playerid, cmdtext[])
{
	dcmd(clearv, 6, cmdtext);
	return 0;
}

dcmd_clearv(playerid, params[])
{
	if(PInfo[playerid][Level] < 1) return SendClientMessage(playerid, 0xAA3333AA,"You need to be level 1 to use this command!");
	for(new veh;veh < MAX_VEHICLES; veh++)
	{
	    if(!IsVehicleInUse(veh)) DestroyVehicle(veh);
	}
}

	return 1;
}

//anywhere in script for this 2nd one.

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