My Most Indispensable Possession

Between laundry loads and catnaps I actually had time to think of what my indispensable possession is.  It would have to be the mini-van.  I could live without the dishwasher, the clothes washer and dryer (except maybe in the winter time),  I can even live without the stove. Having been born and raised in a third world coutry, I can pretty much survive on the less-than-basic necessities of life.  However,  I think life where I am now (and the number of children I have)  would be very, very difficult without transportation.  What is your most indispensable possesion?