Using a series of sensors, cameras and servos the car is able to turn the steering wheel plus activate the throttle and the shifter to navigate across this stretch of road, relying on the road markings painted on the floor to both keep it driving in a straight line and to have it stop, respectfully, at the crosswalk.

ENGADGET: Nissan NSC-2015 self-driving car with LTE and smartphone connectivity (test-ride with video)

His group, Choose Responsibility, argues that the 21 law has done little to stop drunk-driving and, because it is largely unenforceable, breeds contempt for law in general.

ECONOMIST: Is it time to lower America's drinking age?

But correspondents say it was the measure to stop driving through red and amber lights that went down badly with motorists.

BBC: Busy road in Beijing (file image)

Even if one did, the widespread rejection of other countries' driving licences would stop a single person from travelling along it.

ECONOMIST: Regional economic integration has a long, long way to go

Toyota -- yesterday Ray LaHood kind of stepped in it when he mistakenly said that people should stop driving them and then backtracked a little while later, caused quite a big hubbub.

WHITEHOUSE: Press Briefing

It took too many Scarlets tacklers to stop a series of driving rucks - Collins just repulsed - and when Januarie and then Biggar spread the ball there were too few defenders out wide.

BBC: Scarlets 14-21 Ospreys