Video I watched said max range of 150-200 km on one fill-up.  Not too shabby.  And for a price of $10,000.......  there are ATV's/UTV's that cost almost that much. 
Said the Indian car manufacturer is taking a close look at it.  I can see where heavily populated areas - such as found in India and other parts of the world - this would be a step-up in transportation.  And it can have a nice fit in urban transportation.
The question I am wondering: is it more efficient to store energy as compressed air, or in electric batteries?  That is basically what this car boils down to -using electric to store energy as compressed air.  at the end of the day, the concept might not be that bad of an idea.