1) Always do a destination home so you can write-off dead miles if you don't pickup anyone. 2) Write off your home office space on your taxes if you have a computer and work area to support your driving. You will write off the % of total space of house plus % of utilities. 3) Take the mileage deduction on a new car but consider receipt deductions on an older car. 4) Write off any electronic equipment (car camera, etc) and all water, treats, etc. you buy.