This chart explains why Tesla has been making history (TSLA)

For the better part of a century, there have been three major US carmakers: General Motors, Ford, and Chrysler (now Fiat Chrysler Automobiles). 
Over the past few month, a new contender has crashed the party: Tesla. After briefly seeing its market cap rise above GM, Tesla has slipped back. But with a total value of $48 billion, versus $51 billion for GM, Tesla is still considered by Wall Street the number two US automaker — Ford is at $44 billion. Shares closed on Friday at $306.