A lot of engineers who grew up in the mechanical world now need to address the fact that a once-mechanical part is now a complex electrical mechanical device that is controlled by software. In some regards, EVs are simpler than gas-powered vehicles because there are fewer moving parts—fewer complicated gears, bearings and other elements that govern the interaction between the powertrain and the rest of the vehicle. An ideal EV would have motors on each wheel.
one of the biggest is the battery design. For EVs to truly become mainstream, they need to match the performance and ease of use of gas-powered vehicles in range and time to refuel—or, in this case, recharge. That simply isn’t possible with current battery technology, and engineers are wrestling with ways to bring EVs closer to that reality.