Yes. In further considering a little knowledge about RF pulses, it might be important to seal (with steel or at least tightly with aluminum) holes and gaps in the body of a vehicle. An RF pulse is a bit of a different animal in some ways than a line spike. Think of sealing your vehicle body from radio signals with a very wide band. ...similar in effect. If you can’t contact anyone from a cellphone or personal, two-way FM radio from under the closed hood of the vehicle, it’s probably pretty well done. ;-)
...different animal in some ways from a line spike, even. Little grammar there. ;-)
FYI, a suggested method for shielding a garage-parked car is the good ole’ SPACE BLANKET with a functional grounding strap added. In other words, cover your vehicle with an aluminized mylar sheet, well-grounded to earth.
I was told that the pulse is quite directional (not sure I believe that) and thus draping your car is good enough - meaning you don’t have to wrap the vehicle.
AND ... Bass Pro Shop 2-way radios in a small gift box wrapped in foil (the gift box wrapped) inside a shoe box wrapped in foil and set on metal shelving resting on a concrete slab OUGHT to be good enough to save the radios.
LASTLY - put larger items in metal trash cans, ground the cans, tape the lid on and you’re good to go as well.
No need for Mil-spec Farraday cages or Tempest shielding.
so I hear anyways ...
And I read that you need to disconnect the car battery while stored. I guess to keep it from being ‘blown’ by the pulse? Not sure I believe that, but I am not a EE either!