You are in your car going to a sales call. You have a meeting with a partner or are in a new city on business. At least one hand is occupied driving or carrying something. Out comes your phone to find something on Google Maps. Your options are to stop and take two hands and search Google Maps.
I can type in an address or name. I can pan around all with my thumb but I can’t zoom with one hand very well. Google has a neat one-hand feature for maps. You can double tap the screen with your thumb then sliding up and down zooms in/out. Carl Sednauoi shows you how.