Use the search box at the top of the left column to find 2106. It is under Deductions > Vehicle/.Emp... (2106). In the first few entries you will tie it to your Schedule C. Then enter Vehicle Information > check the boxes > Description, placed in Service, Total Miles, Bus Miles, Commute miles and you are done!

If I could edit my reply, I would, but they seem to have Improved this portion of the site.

REMOVE any entries in the depreciation section for this car.