Carpooling is still in its infancy in India, but those who operate the portal are trying to steer it ahead, offering free advertisement postings for potential carpoolers.

The Web site, which started in April, gets around 60,000 hits a month. But there is no accurate estimate of how many people use a carpool in India.

"Rising fuel prices make shared travel more essential for people," Bhandari said.

Sunayana Mathur, a 26-year-old Delhi resident who used the Web site to find a co-traveller, agreed.

"It was expensive driving 15-16 km (9-10 miles) to work from home. So, I found this girl on this site. We travel together and we are now friends."

India's fast-expanding passenger vehicles market is expected to nearly double to more than two million units by 2010, feeding a massive demand for fuel and, environmentalists say, worsening air pollution.

Most Indian cities choke with pollution, blamed primarily on smoke-spewing public transport and taxis, many of which are over 20 years old.

"In the US and Canada, they encourage the use of carpool because of its multiple saving benefits -- saves oil, saves money and saves the environment," said Bhandari.

The portal also teaches potential carpoolers some etiquette.

"Do not smoke, Do not put on the music loud, Do not use abusive language and Do not drive rash," it said.