FIGURE 6-4. Tesla Supercharger stations
The Model S is commonly referred to as a “computer on wheels” because it is always con-
nected to the Internet via a 3G connection. New features are delivered as software updates. For
example, the “hill assist” feature that prevents the car from rolling backward on a hill was
automatically delivered as a software update through the 3G connection. This is revolutionary,
since the installation of such features on other vehicles requires taking the car to a dealer or
mechanic.
Tesla is recognized as one of the leading innovators in the field of electric cars, and it is
quite likely that Tesla’s architecture will inspire other manufacturers. The always-on 3G con-
nectivity and the ability to update the car’s software automatically makes the Model S a true
IoT device that drivers and passengers will depend upon for their safety and privacy. In this
section, we will take a look at some of the features of the Model S and analyze their design
from a security perspective. This will help us understand how security is being designed into
cars that are going to lead us to the future and what improvements we need to make along the
way.
CHAPTER 6: CONNECTED CAR SECURITY ANALYSIS—FROM GAS TO FULLY(^172) ELECTRIC