Maybe so. The DEA would have a hell of a time tracking these things, especially if as little metal as possible went into their construction. Still, with their one knot speed these subs move at the mercy of shifting currents. The Rutgers team hopes their sub will come ashore somewhere in Spain, or at least somewhere in Europe — not exactly precision targeting. Tony Montana wants his product delivered to Florida, not Greenland. I suppose if the subs surfaced more frequently for GPS checks, their accuracy would be improved.