India’s massive Tata Group may have bought Jaguar and Land Rover in March, but Hindustan Motors’ Ambassador remains the country’s unofficial official vehicle. Little changed since its 1957 debut, the Amby, as it’s known, plies the streets with robust ubiquity across the nation. (Delhi’s cabs are black ones with yellow roofs, and government types ride in white versions.) But nowhere does the car seem quite as omnipresent as in Calcutta. HM produces them in a factory just north of the city, and 30,000-plus yellow-painted models serve as the city’s constantly honking taxi force. Rider beware, however: Most of these cute little numbers are not air-conditioned, so they’re best appreciated from the comfort of another vehicle.