This is something that has been getting a bigger issue for me, mainly with my husband but also my son. My husband has never been involved in a traffic accident and I believe him to be a safe driver. For me though I am getting worse, drawing breaths, pressing the imaginary brake pedal even saying slow down or omg regularly, much to his annoyance. I think the main reason is the speed that everyone is travelling at, motorway 70mph and upwards, sometime 4 lanes going in same direction and it is terrifying and I trust my hisband but I dont trust the other drivers, I would rather stay off the motorways and take a longer route if neccessary. I don't drive on motorways myself if I can help it. However this post highlights it is an issue for lots of us, maybe age related too?