So I know this is all a bit fun, laughing at the flat earth folks, but I am not at all surprised how widespread misinformation propagates in society. Especially when it comes to something people can't see or feel and need a degree in calculus to even begin to understand.
EMF exists, yes it can cause cancer, yes non-ionizing radiation is a health issue (if adequate safety precautions are not followed). But what your wife, and others should know, is that these health risks are known, studied, designed out, remediated, eliminated, studied again, designs improved, patented, new risks found and eliminated. To the point safety regulations are an encyclopedia size book set.
Yes, cars, planes, tanks, busses, fire engines, all get tested. I couldn't find the picture of a Tesla, I'm sure it's on these forums somewhere. Basically this is what a real test looks like.
With gasoline cars, EMF safety regulations required coiled spark plug wires to replace the solid core. The average customer only noticed the AM radio interference was gone, not that cancer risk improved. Then some companies saw that coil over plug designs would reduce that EMF even farther, as well as a slight MPG improvement. The vehicles 12v battery was changed from positive ground, to negative ground, reducing ionization of the frame. People barely noticed that they rust less quickly. The cancer risk from electric ignition was for all realistic purposes eliminated without anyone really noticing. Cars began to use special glass with minerals that reflect or absorb outside radiation, such as IR, UV and cosmic rays. Cancer risks are lower in the car, than standing outside it.
EV's like Tesla specifically design their high voltage batteries to be shielded against EMF. Wires of specific metals, sizes, designs, strands, gauge, length and the route around the chassis. Motors have specific controllers, capacitors, sensors, shielding, etc. The CAN bus wires are routed to be a specific distance from passengers, the FSD cameras are designed to have low emissions. Even the cellular modules and passenger side mirror antennas are tested and certified to some cancer safety spec. Taken to the extreme Tesla uses H.265 video compression, and neural network trigger before ever sending any video footage over the cellular data plan. I'm sure they thought more about data costs than cancer, but it does reduce that risk from 1 in a billion to 1 in a trillion.
