One of the reports in the link I posted (dated Nov 99) mentions a that Mexico City has purchased 40,000 (yes 40.000!) of these machines.
I must admit despite spending some considerable time there I have never seen a single one of these cars or seen an air refil station.
I think the engineers and others on this forum have exposed this car for what it is.
I find it sad that worlwide there are people struggling to develop and try new ideas all the time meanwhile there are oprations like this milking the uninformed investor and giving engineering development a bad name.