Tesla Inc (TSLA)

[boston745]

Example of voltage induction in a parking garage. Both sudden acceleration cases mentioned in the pinned post took place in parking garages.

A new five-level parking garage is constructed in Arizona and located adjacent to multiple high voltage transmission lines. The contractor first experienced electrical shocks as they started construction of the third level. For obvious safety concerns, construction phasing was altered and an electromagnetic consultant was hired to provide a thorough investigation.

The electromagnetic specialist measured electrostatic and magnetic induced voltage/current and recommended installing a grounding system to resolve the electrical shock issue. The grounding system is designed to establish a low resistance path to ground. When metals are placed in the electromagnetic field, they act like an antenna picking up a voltage related to the magnetic flux, or the rate of change in the magnetic field. If the induced voltage on metal discharges through an electrolyte, such as concrete, the result can be corrosion. To minimize the effects of corrosion, a piece of metal is completely electrically isolated or connected to the grounding network so that the induced current discharges directly to the ground

This garage had to setup special grounding system to wick away any induced voltage. Its unlikely the pinned post parking garages have this.

https://csengineermag.com/stray-current-induced-corrosion-in-reinforced-concrete-parking-garage/

I experienced something like this but not in a parking garage but out in the open when parked near high voltage lines. My wife and I were shocked when we touched metal components in the car. Interestingly painted metal surfaces didnt seem to conduct well so we could safely touch it.