What did General Motors' Firebird II concept demonstrate in the 1950s and 1960s?

Answer

Futuristic visions of cars communicating with roadways

Concepts like General Motors' Firebird II showed futuristic visions of cars communicating with roadways, which touches upon the requirement for an intelligent road.

What did General Motors' Firebird II concept demonstrate in the 1950s and 1960s?
inventiontechnologytransportautonomyintersection