is it just a line off the street to the house? or is it a high voltage transmission line?
if it's just your residential line, I'd think there's something wrong with the transformer - unless the line is REAL low and almost touching your car.
(AND something wrong with your car - a break in the shielding - or maybe you simply need new plug wires?)
A line on the street shouldn't have enough power to cause much trouble outside of a couple of feet.
Those high voltage lines can though. We used to go out shooting near them. If your gun barrel touches you while you walk under them, it kind of burns you. The metal will generate a steady arc against your skin.
Kind of unsettling. Always wondered if it could somehow set off a round.