Crappy image of how lightning works:
Negative ion paths branch downward from the clouds as a 'stepped leader'. When some branches of the leader get close enough to the ground, one or more positively-charged ion leaders seek upward towards the closest node.
If you happen to be under a positive leader, it apparently will make your hair stand on end and make you feel light-headed. This is why they suggest that if you're playing golf on a cloudy day and feel your hair standing on end, DITCH YOUR IRON AND LIE DOWN QUICK. Electricity likes to travel from conductors to the air through points (like the top of your head
) and lying down can retard or dissipate the development of the positive leader.
Quick thinking jumping in that car. Might have saved your life!
