What I've noticed is that most those lards catch busses too and from fat food areas. Need I go into more detail? Also, keep in mind that there are always outliers in general data. So there is to be expected that a fat person will catch the bus, especially now with 60+% of Americans overweight.  Another point I want to make is it is easy to not notice the quite healthy weight people who don't make scenes, fit in a single seat, and don't make the bus sink as they get on. Now that whale who is taking up the 3 seats in the handicap area, that's another story.