Just wondering what the thoughts are about EMP’s....are they overhyped...in that the one study I saw only made 10% of the modern vehicles inoperative... Maybe I can convince the wife that we really need that 1967 GTO....you know...cuz of the CCP EMP
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the electric transmission lines will be a great conductor of the power surge. Equipment that is not connected to the transmission grid (such as automobiles) will still have some risk but in all likelihood, the most significant effect will be to shut off the car engine and require a restart. Prudent precautions for a predicted solar storm will be to unplug computers, radios, TVs etc, and take down conductors that you can such as antennas. If you fear a "no warning" event, habitually unplugging and powering down will give you added peace of mind.
This is what I saw in my search...
EMP Commission to determine the effects of an EMP on the United States (available here) were conclusive: most vehicles would survive an EMP.
U.S. EMP Commission Test Results – Key Points
50 vehicles built between 1987 and 2002 were exposed to a spectrum of EMP blasts (up to 50kV/m in strength). 3 out of 50 vehicles shut down while driving. All 3 of these vehicles continued rolling until they safely coasted to a stop. 1 of those vehicles was disabled completely and would not restart. 2 of those vehicle restarted without an issue. Many nuisance issues arose from the 50 exposed vehicles including radio interference, strange and erratic behavior from headlights, turn-signals or brake-lights, and one vehicle needed to have its dashboard replaced