I had a neighbor who is a retired electrical engineer (we moved to a different part of the city).

He has an older Subaru Outback and has "EMP hardened" it by constructing and installing a small Faraday cage in/around the engine compartment. I suspect he had something on the inside of the car as well, though i never looked inside.

He is a really interesting guy - has his own (albeit small) observatory on a plot of ground in the mountains as well as being a HAM radio operator at the highest level.

I used to watch him rig up a man-packable Morse-Code "radio" that he said he communicated with a fella in Oregon (living in Colorado).

His basement workshop was like an electronics laboratory. Oscilloscopes and all other kinds of meters and such i don't remember what all.

I'd say he was pretty well prepared...