Use this version. Automobile and power companies are spending billions to make it real. There's a little bit of supersonic car in all of us.
Smart cars running on smart highways are but six years from prototype.
A builder telephoned in an order a day or so ahead, two days in advance for big jobs. He specified a time, knowing it was basically theoretical, depending on an endless array of variables - weather, traffic, a missing receipt, the number of other orders the plant had to try to fill. Penalties or not, on delivery day half of the customers canceled or rescheduled their orders. When the phone rang, it was usually someone who was upset. When the phone rang, sometimes I wanted to just not answer it.