Your cart is one of the most important items on your journey.  Even if you have food, water, and guns, you need a place to put them.  Otherwise, you will never be able to carry all of your stuff. 

What you need is a shopping cart.  You must avoid treacherous potholes, and you must always keep track of your cart so nobody touches your stuff.  It will be a grim day if you lose everything in your cart. Watch out for gangs and thieving kids.