You gave a scenario of a driverless car going 70 mph, loosing a satellite link, and endangering the vehicle heading in the opposite direction. What's on the road is far more dangerous right now... drunks and sleepy drivers to name just two. But the bigger flaw in the scenario is that a driverless car would immediately be out if control if a satellite link is lost. Realistically, by the time it's common that they're doing 70 down some road, the technology will include all sorts of perfected sensors and recognition systems that will know where the car is relative to landmarks and beacons. The live data link from a satellite wouldn't be the exclusive source of navigation information. Downloaded data would be buffered and also if there was a malfunction then the vehicle would have an abort procedure to get to a safe location... even if just the shoulder. If GPS was the only system to rely on, then yes it would be dangerous. But aren't 50,000 people getting killed on highways right now already? Driverless cars will increase safety. With planes already able to fly without a pilot, it may not be that far off that commercial flights could be pilot-less. The airlines' biggest battle will be with pilot unions and legislation... not the technology. New planes can cost hundreds of millions of dollars already... those systems don't add to much to the cost and airlines will be looking at how much labor costs they'll save. Weird, but maybe not that far fetched. The internet hasn't even been widely used for two decades yet and look at how far that technology has advanced in that brief time. Actually, "airline pilots" might could be sitting behind a console somewhere flying multiple planes at once pretty soon. Remember, Josh Dobbs will have his aeronautical engineering degree pretty soon.