Within a few days, Steinmetz mailed Ford a bill for $10,000. Henry Ford, though emminently wealthy, balked at paying such an exorbitant amount of money for what appeared to be a little bit of work. And so he wrote a letter to his friend and he included the bill. “Charlie: It seems awfully steep, this $10,000, for a man who for just a little while tinkered around with a few motors.” Steinmetz wrote a new bill and sent it back to Mr. Ford, “Henry: For tinkering around with motors, $10; for knowing