Reader Mike Greenwald sent me this very interesting map where the size of each country has been resized proportionally to the concentration of motorcycles and moped in each of them. So, the map takes in account ALL powered 2-wheelers. The latest available statistics estimate that, in average, there are 33 moped or motorcycles in the world per 1000 people or 3.3%. As you can see on this map, as a continent Asia has the largest concentration of 2-wheelers. As far as individual countries are concerned, Greece and Malaysia are leaders with 1 or more motorcycle or moped for 5 people. If you are craving for numbers and want to see all stats and sources, jump to WorldMapper.