A passing lane (North American English) or overtaking lane (British, Irish and Australian English) is the lane on a multi-lane highway or motorway closest to the center of the road (the central reservation). In some countries, lanes are described as being on the 'inside' or the 'outside' of a road - which one the passing lane is varies.
When Italian handyman Vincenzo Peruggia stole the Mona Lisa from the Louvre in 1911, he never could have guessed her absence would be the very thing that made her the most recognizable painting on the planet.
Supposedly this was because Mona Lisa was Leonardo's favourite painting and he was loathe to part with it, however it may also have been because the painting was unfinished. Whatever the reason, much later it was sold to the King of France for four thousand gold crowns.