In 2016, Tesla introduced a new version of its popular Model S electric sedan, the S 60, starting at $66,000. It comes with a battery pack that can store 75 kilowatt-hours of electricity, but its software limits it to using only 60. However, for $9,000, the owners can get a simple software upgrade to get the full 75, increasing the car’s range by about 19 percent. Why is Tesla purposefully hobbling its cars? Explain its pricing strategy.