<P> In February 2016, the 85 kWh battery option was discontinued in countries including the US, Australia and Canada . </P> <P> In March 2016, media reported that a firmware version distributed for the Tesla Model S had support for a P100D variant that was yet to come . This battery is more complicated to make than the 90 version . The P100D was released in August 2016 . </P> <P> In April 2017, Tesla ceased offering the 60 kWh software limited battery option . The lowest capacity option became the 75 kWh, and at the same time Tesla significantly reduced the software upgrade options for facelifted 60 and 70 models to be upgraded over-the - air to 75 (and rebadged at their next visit to a Tesla service centre). </P> <P> The Model S is notable for being designed solely with an electric powertrain in mind, unlike other vehicles where the manufacturer has simply swapped out or supplanted an internal combustion engine with an electric motor . As a result, the Model S is able to offer unique features such as a front trunk (a' frunk') in addition to a spacious rear trunk (with a total cargo volume of 31.56 cu ft (894 L)) and a greatly enlarged front crumple zone compared to the typical combustion engine powered vehicle . </P>

How many electric motors does a tesla have