Interesting comments at the end of that article, with at least one person saying EMP isn't the big bugaboo everyone says it is, and that lots of newer vehicles would survive it.
I don’t think anyone really knows. There has been some testing but it was rigged. They had to return the vehicles in working condition.
Emp is real, it depends on the electronics. Electronics are not shielded and are very sensitive. I’ve read statements by too many people who would know to dismiss it as a major threat. Just my opinion. Ymmv