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Seriously though testing your car at high speeds in reverse is a good way of demonstrating that your car only has one gear and can run the motor in reverse.
Original Xbox was successful.
Xbox 360 was an improvement.
Xbox One was a disaster from a development POV. They took all the wonderful, working tools from the 360 and threw them out the window. Further, the specs were underwhelming (until the One X) causing them to lose market share to the PS4.
Honestly, I hope that's not the case. I know Tesla's goal is to advance sustainable transport, but if they want to include other cars to charge, they better be paying a hefty upfront fee, because Tesla took the risk of investing large amounts in charging infrastructure.