In Pictures: Derby Day devotees, Kenyan style
Photos of the Day: Photos of the day 05/16
In Pictures: Dazzle like Beckham
In Pictures: Weather extremes 2013
Photos of the Day: Photos of the day 05/15
In Pictures: Duchess Kate's royal baby bump
Photos of the Day: Photos of the day 05/14
In Pictures: Keffiyeh is rebel chic
School children pack a auto-rickshaw, known as tuk-tuks, on their way to school in the western Indian city of Ahmedabad on July 20, 2011. Amit Dave/Reuters/File
Taxi cabs speed down Broadway near the intersection of Seventh Avenue and 42nd street in Times Square on May 5, 2005, in New York. The yellow Crown Victorias are soon to give way to new taxis. Kathy Willens/AP/File
A prototype of the Nissan NV 200 New York City taxi is off-loaded from a truck, in New York, April 2, 2012. The iconic New York City taxi has gotten a passenger-friendly makeover. Medallion owners will be required to buy the Nissan NV 200 at a cost of about $29,000 starting in late 2013. Richard Drew/AP
Nissan Model Relations Manager Kengo Yoneda tests the instrument panel in the driver's compartment of the prototype of a Nissan NV 200 New York City taxi, in New York, April 2, 2012. Richard Drew/AP
Taxi rank marshall Mandla Jabo loads the taxis and tells them where to go in Diepsloot, South Africa, September, 2009. Minivan taxis are the main mode of transport for the vast majority of South Africans - especially Blacks from the townships - as they travel to and from work. Including queuing, it can take hours to go short distances. Melanie Stetson Freeman/Staff/File
In this photo taken Feb. 16, 2012, matatu or minibus-taxi conductor Kevin Obura performs acrobatics in the doorway of his moving vehicle to amuse his passengers and attract others to board his matatu named 'Mist' on the streets of Nairobi, Kenya. Ben Curtis/AP
A family watches birds while crossing the Yangon River on a ferry in Yangon, Myanmar, April 2, 2012. AP
A musher and his sled dog ferry tourists in the mountain village of Horna Marikova, 120 miles north of Bratislava on Feb. 4, 2012. Radovan Stoklasa/Reuters
A bicycle taxi driver transports passengers in Havana, Cuba, November, 2010. Alfredo Sosa/Staff
A Cambodian motor-taxi man picks up his customer in a street in Phnom Penh, Cambodia, April 6, 2010. Heng Sinith/AP
Linear Air, a charter aviation company, caters to business travelers who require short, last minute flights and who want to avoid busy commercial airports. The Eclipse 500, is the company's newest, 5-seat, lighter, more efficient airplane, considered the 'car service with wings.' Nicole Hill/The Christian Science Monitor/File
A child returns from school on an enclosed cycle rickshaw in New Delhi, India, Sept. 6, 2011. Gurinder Osan/AP
A woman rides a Youbike bicycle past a renting station outside the Taipei City Hall in Taipei, Nov. 5, 2009. Nicky Loh/Reuters
A chicken vendor with his birds travels on a hand pulled rickshaw in Kolkata, India, Feb. 21, 2012. Bikas Das/AP
A parking station for the Autolib' electric car-share scheme is seen on a street in Paris, Dec. 2, 2011. Paris, in its latest bid to be an innovator of the City of Tomorrow, is launching an electric car-sharing program to cut air and noise pollution on the city's medieval cobblestone streets and beyond. Christophe Ena/AP
A human-powered tricycle taxi carrying a passenger runs through a Tokyo street on Oct. 31, 2002. A Japanese non-profit organization in collaboration with the German company, Velotaxi, started a new urban transportation service with 10 tricycles in Tokyo. Toshiyuki Aizawa/Reuters
A rickshaw puller is reflected on the installed mirrors of his rickshaw as he waits for passengers on a street in the eastern Indian city of Patna, in Bihar state, Jan. 21, 2012. Adnan Abidi/Reuters
A taxi driver drives in a tunnel crossing under the Huangpu River in Shanghai on March 23, 2012. Picture taken with a remote camera. Carlos Barria/Reuters
In Pictures: Derby Day devotees, Kenyan style
Photos of the Day: Photos of the day 05/16
In Pictures: Dazzle like Beckham
In Pictures: Weather extremes 2013
Photos of the Day: Photos of the day 05/15
In Pictures: Duchess Kate's royal baby bump
Photos of the Day: Photos of the day 05/14
In Pictures: Keffiyeh is rebel chic
India's air pollution is now worse than China's. To tackle its problem, Delhi has rolled out one of the world's largest fleets of vehicles fueled with compressed natural gas.
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