Mileage from an address to an address
Type where you went and the distance is worked out for you, with address autocomplete from Google Maps.
Start typing an address and it completes; give a trip a start and an end and the distance is calculated by road. Log the trip against a job, or as general business travel. The manual entry that was here first stays for the trips that were not a simple A to B.
Professional plan — the map lookups cost money per call.