How to use Waze and Google Maps to find cheaper gas

You can set your destination to cheaper gas with the help of Waze and Google Maps.

The U.S. national average for a gallon of gas is $3.40 — and in places like Hawaii, California, and Pennsylvania the average is over $3.50, according to AAA.

There are gas tracking apps like GasBuddy, but that requires a separate search on...