New cars have 30 to 50 computers, and they can be hacked so that the driver does not have control of the brakes. Check out this episode on 60 Minutes: http://www.cbsnews.com/news/darpa-dan-kaufman-internet-security-60-minutes/

For a review of electromagnetic radiation (EMR) emitted within cars, here’s Katie Singer’s interview with physicists Drs. Gary Olhoeft and Bill Bruno on Inter-Occupy, January 29, 2015.
https://www.electronicsilentspring.com/cars-emfs-emr/