The 1954 Mercedes W196 Streamliner engine.
Mandatory Credit: Sotheby's via CNN Newsource
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A 1954 Mercedes worth up to $70 million will be among legendary racing cars up for sale soon
A 1954 Mercedes-Benz W196 Streamliner valued between $50-70 million is among the historic cars set to be sold by the Indianapolis Motor Speedway Museum.
