iPirate, I drive a semi locally, and have the ability to cover 200-500 miles in a day, and can leave my phone on the charger. Are you looking for logs, or just overall impressions of the app? Im more than willing to give it a go, let me know.
An app like this should be possible. I saw an app somewhere that was for vehicle diagnostic that utilized a bluetooth OB2 adapter that plugged into the vehicle.
The bluetooth adapter was fairly inexpensive.
Odd that hasn't happened to me yet.
How well did it judge your driving?
I am planning to add mapping and logging if it is something users would like to see