Car pooling three people really can't be done on two wheels. Almost everything else can. I can carry a weeks worth of groceries, or a months worth of laundry on my bike. Riding a bike is a way of life, just like carrying a gun. You adapt to your environment and do what you can. I carry a duffle bag with a change of clothes to work. Stays in a locked locker while I work.
I don't want to be on the road next to you under these circumstances.