now on bbc news, it's time for click. this week, we're on wheels as we race through the new car tech in las vegas, and then bring it safely to a stop. but is anyone actually in the driving seat? plus, what's up with this shop? we are at the supermarket that has something very strange in store for you. hey, welcome back to the consumer electronics show in vegas. we have cars for you this week, lots of them. one of the biggest draws at the show in recent years has been the motor hall — so lara, are you ready