To be more productive, one must think of ways to do more in any given time. Since time cannot be stretched actually (we are all given the same amount of time a day whether rich or poor), the manner in which we do things is what we can alter. That is the main reason why a lot of things are being made instant. Technology has advanced greatly to become faster. Bringing things from one place to another is also not left behind that is why the cpu cart was also invented. You think groceries and food courts are the only ones using carts?