the Essex car company had 4 cars cross the US in an attempt to influence the government and get mail contracts. All 4 cars finshed with an average of 4 days 21 hours and 32 minutes.

One of the most famous races took place in August 1920 and featured four Essex cars. Two started from the East Coast and two from the West Coast. Each carried a mail pouch and, like the Pony Express riders of old, relief drivers were sworn in as letter carriers. The average time for the quartet was 4 days, 21 hours and 32 minutes. The race generated tons of publicity.

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