I have been a little obsessed with this idea lately, so I'm pretty excited to see some progress. "Training" cars to share the efforts of acceleration/deceleration, cut wind resistance, ideally reduce collisions, minimize the effects of "traffic fluid dynamics", and allow me to play on my laptop during my commute is technology I can get behind.
Initial thought on reading the title was that it'd be a struggle to run road trains in most of the EU and UK, but thankfully the article wasn't referring to one of these <a href="http://en.wikipedia.org/wiki/File:Road_Train_Australia.jpg" rel="nofollow">http://en.wikipedia.org/wiki/File:Road_Train_Australia.jpg</a>
Road trains will share the road with everyone else. Just one car cutting in front can lead to a horrific accident. It will be similar to real train accident but more frequent.<p>Plus the feeling of control is very important. Flying is safer then driving, but numbers be damned, in a plane you have no control so it <i>feels</i> a lot worse then driving.
It's like a bus, but with far greater fuel consumption, a far larger road footprint, and the bonus chance to have a multi-car accident due to a software hiccup.