GPS for finding your way around is becoming a thing of the past already (technology, faster than a speeding bullet indeed). I find most businesses these days are using on board, hardwired GPS trackers now. If an actual directional map is needed, Garmins interface with GPS trackers and connected by FMI cable for 2-way text. Its is a LOT less expensive than paying cell phone and web bills now. Companies get great benefit when setting up staff this way, many are stopping cell phone use completely (unsafe while driving anyway) and find they can reach out of office staff easier this way.

The company also knows exactly where you are too, they know exactly where you've been, how long it too you to get there, when you started your day, when you finished your day, how many stops and starts you've made, WHERE you stopped or started, how long you were idling for etc, It saves a lot in administrative costs and time, reduces the company's fuel expenses, increases customer service, removes billing issues with on site time and charges, offers driver safety, lowers insurance premiums, offers theft security and simplifies recovery of stolen vehicles etc.

For finding your way home from the local mall though, use your phone if you're lost.