In article .com,
Dave wrote:
The advantages would appear to be adequate power and range
for urban/suburban use - and zero pollution (not counting the
pollution generated in the process of compressing the air in the first
place). Such vehicles could be "recharged" by compressors overnight -
when surplus electric power is available. Downsides? High pressure
compressors are expensive, and require lots of power to operate. Not
to mention the fact that any high pressure tank is a potential bomb.
OTOH such tanks are in common use, such as SCUBA tanks and paintball
tanks - found everywhere.

Comments?

More drain on the world's supply of both balonium and unobtainium.

You can't store enough compressed air to make it practical -- perhaps
they use a very long air hose?