They don't emit "radiation". At least not in the way that most people interpret the term "radiation". When someone says something emits radiation or is radioactive people typically think medical level radiation (x-rays, cancer treatment), Nuclear power plants, etc... But those are stronger forms of radiation known as ionizing radiation.
I mean, honestly, they do emit "some" high level ionizing radiation... but you know what else does at similar levels?... Humans.... bananas... ham sandwiches.... rubber... the sun (massively)... literally everything to some degree...
You'll be exposed to more high level radiation flying from here to Dallas, TX than you will in an electric car... because A) You're closer to the sun, and B) More significantly, you have about 5-6 miles of less atmosphere protecting you than you do on the ground... But the same people who won't hesitate to fly to Dallas to see the Dawgs play in the Cotton Bowl are scared to drive there in an Electric Car.
But like every other electric device we use in our lives electric cars do emit low level electromagnetic radiation (EMR) or non-ionizing radiation. Yes, electric cars emit more of this than your typical cell phone but like you pointed out, there is shielding that alleviates this but the shielding really isn't even designed to degrade EMR, but rather its there due to the heat the batteries put off much like the heat an ICE puts off.
But if anyone is concerned about EMR they should watch Better Call Saul and see how Chuck McGill protects himself because we are literally bombarded all day, every day by EMR... non-stop, every second... at levels that far exceed anything we will ever get from driving an electric car... and knowing this and thinking about this is what drove Chuck McGill crazy.
So you are correct in your research that "radiation" levels from an electric car are safe, and the OP was way off base... For the record, people do get sick in electric vehicles, but its motion sickness that happens at higher rates than normal ICE vehicles because of the lack of engine noise and instant acceleration.
Source: I'm a Nuclear Physicist who currently works as a Medical Radiation Physicist.
