Travel recording - Start and end rather than distance

In New Zealand we can claim personal vehicle expenses based on distance travelled, this is tracked by a start and end reading from the vehicles odometer.

Instead of entering in the distance it would be great if we had the option to instead enter in the start (when starting the time tracking) and end (when ending the time tracking) on mobile so it is logged against the job.

Even better would be some sort of automatic GPS tracking to record the distance.