Car That Runs On Air

The car that runs on air!  this video from CNN is already 4 years old. Looks like speed is a big issue as well as stability hence why it is being branded an "urban" car. I'm assuming that in 4 years some of these issues might have been ironed out in a new design, alas I cant find anything and can only presume that the technology rights were purchased by an oil company scared of losing in petrol sales? If anyone has any updates pleas post below as we would be really interested to find out