71.   On Tuesday, as journalists got a sneak preview of the auto show opening to the public on Thursday, Greenpeace unveiled its own concept car.

72.   The announcement comes just seven months after the coupe was unveiled as a concept car at the North American International Auto show in Detroit.

73.   The computerization cut the time from initial sketch to concept car to six months.

74.   The last DaimlerChrysler concept car making it into production was the Plymouth Pronto Cruizer.

75.   The models were all concept cars that are ideas in the works not slated for immediate production.

76.   The pricey, powerful Dodge Viper also began as a concept car, and the new Jeep Liberty sport utility vehicle is based on two previous concept vehicles.

77.   This year, Ford will show two new concept cars, a hybrid SUV and a fuel-cell powered car based on the frame of its popular Focus.

78.   This year, GM will show off nine concept cars at major auto shows that have sprung from the portfolio center.

79.   Concept cars are built to test media and public response to new design, technology, color or wheel style.

80.   The Tiburon convertible concept car will never go into production because of its prohibitive cost but will influence future design trends at Hyundai.