You Know What I Hate, What I Really, Really, Hate?......European cars with indicator switch on the left .
(Why can't 'they' come to a common agreement )
They did, then the others went and put it on the right.
If you spend any real time in one, you get used to it very quickly. After a couple of months, you get used to driving either.
The killer is if you've (say) been regularly driving both a manual Euro car and an auto Jap/Aussie car, and then swap into a manual Jap car - its amazing how your (my) brain develops associations like that.