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You probably noticed that we've been bringing you all the exciting new metal from this year's Detroit motor show. You probably also noticed that you were on a computer browsing an internet at the same time. 

But there was a time when the world wide web was all trees and, instead of heading online, humans would converge at colossal exhibition halls to gawp at the latest metal.

There was one event that stuck out, though - it showcased the most iron, was held in the biggest venues and has yet to be beaten for sheer pomp and glamour. What's more, it was hosted by a single group - General Motors.

Named Motorama, it thundered on from 1949 to 1961, showcasing the latest of its brands' tech to a baying American public.

Click on for more of GM's "automobile extravaganza".