Somehow they got the concept of zero emission right at the start of the century, but it just didn't seem to work out.

The I.D.E.A KAZ was a luxury limousine concept from 2001. The KAZ, Keio Advanced Zero-emission vehicle, has a total of 8 wheels, 6 of which were involved in turning. Each of the KAZ's 8 wheels was powered by its own electric motor - hence the zero emissions.

Unfortunately, whereas most luxury vehicles have names which evoke a sense of prestige and quality, the I.D.E.A KAZ sounds more like a cheap electronic gadget.