Looks like a 6 cylinder bike. If you want to find the bike, try your local fast food restaurants. Looks like that rider spends some time at them.
A common misconception about overweight people is that they eat too much food. Or they eat the wrong kinds of foods or do not exercise enough.
Imagine if you had to carry two 50 lb. weights around with you everywhere you go . Do you think you would get stronger?
The guy that invented the power bar ran tryathelons, he dropped dead at age 51 at a post office. He was very fit. Makes no sense.