And if we get hit with an EMP over the 35KV that was what the test was limited to there will be a lot of spare gas and oil on the road. There were two vehicles that were disabled to the point where they needed to be taken to a shop to be repaired. A small nuclear weapon detonated in near earth orbit would produce an EMP with an E1 yield exceding 1million volts at its "ground zero" point and it would cover the entire USA with more than 100KV E1 pulse.http://www.survivalblog.com/2010/08/real_world_emp_effects_on_moto.html
I'll just leave this here...
They stopped the testing at voltages that caused any damage because they were responsible for the condition of the vehicles. They also were not allowed to report which vehicles were more protected or more susceptible to EMP damage.