* If you're in a hot climate, you get "free" cooling, from the release of the expanding air. OTOH, if you're in a cold climate, you don't get this benefit and you still have to figure out how to heat your vehicle.
* The refills would be quick -- quicker than any solution proposed for battery-electric vehicles. Or, you could have slow refills using a small compressor at home.
* Regenerative braking could capture a lot more energy than is possible in an electric vehicle.
* The article mentions powering the compressors by using wind or solar power. That could be a way of making some use of the wind power or solar power that is produced when it's not otherwise needed. Of course, that requires an assumption that wind and solar power are inevitable, regardless of financial or other considerations.
* Compressed air tanks have greater energy density than batteries -- i.e. they don't weigh as much.
Tata "AirPod" prototype. (India)