Car based mode of transportation with a lit sign on the roof.

Yellow cabs driven in The United States by men who speak little English.
Black cabs driven in England by men who speak too much English.
Beige cabs driven in Germany by men who speak perfect English.
Rusty cabs driven in India by men who speak some English but can shout Hindi/Telgu/Tamil/Kamada/Udu/Gujarati/Bengali/Punjabi.

Trivia: Stephen Fry owns his own black taxi cab.