When the Supreme Court had ordered the Delhi government to run its buses on cng (compressed natural gas), the directive was sought to be circumvented on the pretext that natural gas technology was not proven and options available were too few. The wide variety of new generation alternative fuel vehicles (afvs) showcased in the eighth National Clean Cities Conference at Oklahoma City in the us, however, gives the lie to such claims.

While Toyota proudly announced the zooming sales of its hybrid electric car at the meet, General Motors divulged details about its own afvs. Nissan went to town on its zero-emission vehicles and Ford highlighted its role in creating partnerships and infrastructure for afvs. But Honda's tagline for its cng car