It happened to me twice that I drove the wrong way down a motorway. I didn't immediately realise why opthers were flashing me.
I have to say that the moments I realised I was going when wrong way, was most enlightening in that I had to act immediately or (probably) have a smash-up.
The both episodes gave me a greater appreciation for just being alive.
(I have since given up driving and am more than happy to take a bus to get places.)