Working as a Location Scout in and around Los Angeles, California, I sometimes drive 500 miles in one week. And there are plenty of other scouts out there who drive a whole lot more.
So if you live in the US, and you drive your car for work (commuting to and from the same office everyday doesn’t count, sorry), then you are entitled to a reimbursement for the mileage your car takes. That rate is adjusted year-to-year and I suggest you talk to a professional accountant about how to deduct it from your taxes, if your company isn’t paying you for them. The new 2015 rate has gone up to $0.575/mile.
More info on this Forbes article here.
Stay tuned as I’ll let you know which is my current favorite mileage tracking app.