On “cities,” high altitude electromagnetic pulses may shut down nearly all vehicles for broad areas under the sources of pulses (micro-components in vehicles). Routes in and out of cities would be blocked by vehicles. Such transportation would cease. Some have said that vehicles are shielded from RF pulses and rays by their steel bodies, but that would require tight seals at all joints between body panels and heavy connections to ground. Body panels (like cases around electronic equipment) would also likely go high in voltage potential to cause damage to components from ground, so to speak. Gas stations would also cease to operate (microelectronics needed for dispensers and likely lack of power for pumping in such an event).
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