Take a quick look at this little link...
Someone has put together a bunch of pictures of people using bikes/two wheels for transporting stuff that is HUGE or fragile...I don't think the baby in a laundry basket on a scooter is really that smart necessarily, but it proves at the very least that our ideas of what is necessary is skewed.
On the other hand, I'm also really glad that lawyers, consumer groups ,et al have made things like bridges without planks illegal and non-existent in this country (see the first picture on the link). I know from first hand/personal experience as a kid visiting the Philipines, that bridges made out of bamboo poles tied together with hemp makes for a dodgy bridge that little kids fall off of pretty easily. Then again, I watched alot of other kids climb coconut trees thirty or forty feet with a machete, barefoot, and with no protection for fun and profit. Maybe I was just a soft nerd with a bowl cut...I said maybe.
Anyway, when you are commuting home today in an SUV or anything with more than three wheels, think about these folks striving everyday- carrying alot more than a briefcase and thank your lucky stars you are where you are- unless its in traffic...in which case, get a bike!