Electric Vehicles

ICE engines are cool because of how complex they had to become in order to become even as remotely as reliable as Electric Engines are fundmanetally.

I remember in the 90's when a lot of carmakers were developing variable valve timing where the valve timing would adjust based on RPM, using the different parts of the camshaft for each cylinder's timing, so that it could maximize performance/efficiency for a wider range of RPMs without trying a one size fits all approach for the whole range. And each carmaker used a slightly different approach, trying to do something to squeeze out just a little bit more performance out of the same size engine.

Or consider the nature of the transmissions, and the rise of the automatic transmission, which allowed carmakers to start going into 6-10 gears (or the continuously variable transmission) because shifting gears could be abstracted away from the driver's perspective.

The history of a lot of the other engineered functions (getting power from the engine to 2 or 4 of the wheels while allowing different rotational rates, getting fuel into the cylinder, cooling and lubricating the engine, getting the fuel/air mixture right, etc.) shows that it's so many different things to worry about just to make the car go, reliably and safely.