Tesla's biggest problem with self-driving cars is that it actually has to sell them to customers (TSLA)

· Unlike Cruise and Waymo, Tesla has created a business around building cars and selling them to consumers.
· This business model has been wildly successful for Tesla, now valued as highly as three of General Motors.
· But Tesla is hamstrung by this model, as far as the potentially $8 trillion autonomous ride-hailing and...