Mario drives his pickup truck on a delivery route. He also uses it for personal travel and is concerned about the time required to keep accurate records for tax purposes. He knows that guessing will not satisfy the IRS requirements. With the Co-Pilot in his truck, he can key-in the changeover mileage from business to personal, and he sees verification on the LCD readout. At the end of each week, a convenient time period that he selects, he gets a computer printout for his records. At the end of the tax period, Mario gets a dated mileage log of fuel costs and a printed record of truck maintenance and other deductable costs that he submits with his tax returns. Life is now easier for Mario.