Drum roll please. Thank you! I’ll be here all week. Don’t forget to tip your waitress.
One van that was re-registered and sold within Japan was found to emit 110 microsieverts of radiation an hour.
As a “whole body” dose rate, that’s over two times what we define as a Radiation Area. In one hour you’d pick up twice what I did Tuesday while surveying our entire accelerator Ring…High Radiation Area and all.
Immediately life threatening? No. Your body repairs acute damage much faster than that exposure creates it. Increased likelihood of cancer after decades of driving? Almost certainly.
World's Only Rational Man 
But who has his car for decades these days?
Do, does that mean that there is another good reason to stay away from those vehicles then, aside from the drivers of course?