[r00fus]

> An internal combustion engine has thousands of different parts - many of them moving, unmonitored and uncontrolled.

And it's century-old tech... and millions of people know how it works at a very low level. Lots of the problems are known or solved.

[rbranson]

Often these problems are solved through complexity. ICEs have very limited ranges of torque efficiency, so we work around them using a complex transmission. Other complexity eliminated by an electric vehicle: induction & emissions systems, environmental controls, ECU/fuel control & associated sensor networks, NVH suppression, fuel storage & delivery, belt-driven accessories (inverter, A/C, power steering).