GM Futurliners...

The GM Futerliners were a group of stylized buses designed in the '40's by Harley Earl for General Motors.

They were used in GM's Parade of Progress, which traveled the United States exhibiting new cars and technology. The Futureliners were used from 1940 to 1941 & again from 1953 to 1956.

A total of 12 were built and 9 were still known to exist in 2007