A firm is evaluating an investment in a fleet of vehicles that will be used for 10 years. The vehicles would cost $70 million. According to the IRS, the useful life of these vehicles is 5 years, and the firm will depreciate them using straight-line depreciation. The firm expects to generate additional revenue of $30 million per year using these vehicles. At the same time, the firm expects to pay approximately $10 million to maintain them. However, the firm anticipates being able to utilize them to aid in other endeavors, saving approximately $5 million per year. At the end of the 10-year period, the firm expects to be able to sell the vehicles for $10 million. The company pays taxes at a 40% rate. The firm anticipates that its cash needs will increase with the vehicles in use, so it plans to keep an additional $20 million in cash for the next 10 years. 

What is the NPV of this investment if the firm has a 14% cost of capital?