public OnPlayerCommandText(playerid, cmdtext[])
{
	if(!strcmp(cmdtext,"/lock",true)) 
    	{
        		if(!IsPlayerInAnyVehicle(playerid)) return SendClientMessage(playerid,0xFFFFFFAA,"You have to be inside a vehicle.");
        		for(new i=0; i < MAX_PLAYERS; i++)
        		{
            			if(i == playerid) continue;
            			SetVehicleParamsForPlayer(GetPlayerVehicleID(playerid),i,0,1);
        		}
        		return 1;
    	}
    	return 0;
}