One of the big challenges when designing and manufacturing auto parts is ensuring that they operate reliably in very hot environments, such as Dubai, where the high temperature can easily reach 40˚C. Of course, they must also operate reliably in very cold environments, such as Siberia, where the thermometer can drop to -40˚C or below. You certainly don't want parts to fail when you're zipping down the road at 200 km/hr. because they can't take the heat (or the cold).
Testing the electric motors and the electronic control modules found in today's electric vehicles (EVs) and hybrid electric vehicles (HEVs) is in many ways more challenging than testing internal combustion engines and their control modules. For one thing, HEV electric motors spin faster than internal combustion engines. They also must change speed more rapidly than internal combustion engines, and because some are designed to also generate energy, the test system must also measure the electrical output as well as the mechanical output of the motor.