Saving time - for what?

Nowadays we have so many time saving devices. I remember that mother did her weekly wash with a scrubbing board. Now we have washing machines to do the job. As a young manI
had to buy myself a bike to get me around. Now a car is deemed necessary. Again this should save a lot of time. Fair enough! But although we have so many means of saving time we always seem to be short of it. How come? What do we do with the time we save? Do we ask God to bank it for us assured that he knows how to get the best interest on it? That sounds like a good idea.