Unlimited Capactiy
"There's always room for one more" has a whole different meaning in India. There doesn't seem to be a limit to the number of bodies that can squeeze into a bus or taxi. Granted you may have to ride up on the roof of the bus or cling to the back of the taxi, but if you can find a grip or foothold you are good to go.
Public transport isn't the only thing that's overloaded:
Here's what a school bus looks like in the outskirts of Delhi:
