Can you explain how to handle Auto Depreciation of one vehicle on two separate schedule Cs when one of the businesses has been using the vehicle (and depreciating it) for a number of years, and then I started a second company (running both businesses at the same time). How do I show the vehicle depreciation on the second (new) schedule C while I still have business use with the vehicle in the first (older) business? The newest business is consuming 75% of the vehicle, while the older Biz is at 15%, with 10% personal use.