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Wikipedia: Taxis of New York City

Wikipedia: Environmental issues in New York City

Anchor text: Requirements in order to obtain a taxi licence in London – by: Transport for London

Wikipedia: Taxis of the United Kingdom

Anchor text: Hybrid taxis slowly catching on in the west

Wikipedia: Hybrid electric vehicle

Anchor text: Hybrid taxis slowly catching on in the west

Wikipedia: Taxi

Anchor text: Hybrid taxis slowly catching on in the west

Wikipedia: Hybrid taxi