Something to think about. Modern transistors and IC's are a lot more complicated than they used to be. A simple transistor is no longer a simple transistor but inside that package contains all sorts of protection, over voltage, surge, over current, thermal, short circuit, etc. So while they may be smaller than older ones they have a lot more robustness.
Vehicles are the same way, even though they have a dozen computers they also have extra protection. Nearly every device in my truck is protected by three levels of fuses for example. Then there are more grounds, I've counted over 30 ground points and don't even have the complete schematics for mine. So they do act somewhat as a farady cage. Then the modern tires are somewhat conductive to keep the vehicle grounded as well.