While in a perfect world the laws of physics may have protected you THIS TIME, in your case, the line was most likely dead. My guess is the reason your station was closed and the area dark as pitch was it was a feeder line and it had been down for a while.

High voltage transmission lines are not insulated, and if they are live and grounded they arc, smoke, hiss, sparkle and/or glow. The typical 50,000 volt lines will easily arc though tires to ground blowing out and cooking the the tires in seconds and yes, while in the car you are actually in phase and protected.

However, there is also the arc flash that can kill you from a distance or turn your almost empty plastic gas tank into a bomb.

As an electrician we're required to take yearly continuing eduction courses to maintain our licenses. The course usually includes four hours of graphic pictures of fried trucks, cars, cranes and corpses that were doing things they were not supposed to. I've never seem a Volvo in any of these power points, let's keep it that way.