News of Tata's air-powered "Mini CAT" car first surfaced way back in 2008, and even now it remains one of the most contentious articles on the TMR website.
Now, the Indian owner of Jaguar and Land Rover, and producer of one of the world's most affordable cars - the Nano - has confirmed that the Mini CAT will hit showrooms in August.
The Mini CAT is made mostly from fibreglass, with a bonded (glued) tubular chassis rather than welded. And power, of course, is provided entirely by compressed air.
Fuelling the car costs only as much the electricity needed to power the compressor - around $2, Tata says.
After a 'fill', which takes around three to four hours at home or only a few minutes at a suitably equipped service station, the Mini CAT is supposedly good for around 300 kilometres.
Developed jointly with ex-F1 engineer Guy Negre and his outfit Motor Development International, the Mini CAT will be priced from around $8000, or around four times the price of the Nano city car.