Actually the shopping cart that follows you around wouldn't be lazy(sure there are going to be those people), but for those who are say wheel-chair bound and need their hands free or if you have a care-taker pushing you then they don't have to ask for help from someone else to push the cart while you push a love one in their wheel chair. I would love to see this in all super markets/malls to help more handi-cap/disable people while they shop.