Depreciation

In general, if you use your vehicle in pursuit of a trade or business, you are allowed to deduct the ordinary and necessary expenses incurred while operating the vehicle. However, any expenses associated with the personal use of the vehicle are not deductible. For purposes of these deductions, "car" includes a passenger vehicle, van, pickup or panel truck.

Personal vs. business miles. Business use of your car can include traveling from one work location to another work location within your tax home area; visiting customers; attending a business meeting away from the regular workplace; and traveling from home to a temporary workplace if you have one or more regular places of work. The costs of travel between home and a regular place of work, however, are nondeductible commuting expenses.