1st world needs doors. 3rd world gets bags, baskets, or just their legs.

Anybody who has been to SE Asia knows that two-wheeled vehicles already have plenty of cargo space.

Here's a woman with a dog

Here's a woman with a goat

Here's a couple with all kinds of stuff, probably on their way home from work and did some shopping.

Here's a family of four, with one kid taking a nap

I could go on.