Watching Tesla’s video of a door-to-door self driving car offers an amazing glimpse into an autonomous and robotic future But there was also a disturbing footnote to the announcement: you are not allowed to let your self-driving Tesla operate as part of Uber or Lyft, only as part of some forthcoming Tesla network. Now you might ask, is such a restriction legal? Haven’t I, as the purchaser, paid for the car? And normally, once I have paid for a car, doesn’t the manufacturer have no further say...

Watching Tesla’s video of a door-to-door self driving car offers an amazing glimpse into an autonomous and robotic future But there was also a disturbing footnote to the announcement: you are not allowed to let your self-driving Tesla operate as part of Uber or Lyft, only as part of some forthcoming Tesla network. Now you might ask, is such a restriction legal? Haven’t I, as the purchaser, paid for the car? And normally, once I have paid for a car, doesn’t the manufacturer have no further say...