1974 Spokane World's Fair

picture: 

Exposition Theme:
•　“The Environment”

GM Message and Pavilion:

•　“Mobility in Harmony with Our Environment”

•　Pavilion consisted of four canvas and aluminum domes and a courtyard

•　Displays:

　--20,000-square-foot (1,858-square-meter) exhibit with 40 individual displays

　--Sigma I gas mileage indicator, a device that would prevent a car from starting if the driver was drunk

　--Catalytic converter, which would become standard equipment beginning in 1975

　--"Air Cushion Restraint System," aka the air bag

　--Child restraints

　--Electric car

　--Most of GM’s 1974 model year cars

Significance for GM:

•　Allowed GM to demonstrate many technology concepts that would become industry standards, especially in the safety area

•　Landmark: 30-foot (9.1-meter) tower