6. Hybrid cars are touted as a "green" alternative; however, the financial aspects of hybrid ownership are not as clear. Consider a hybrid model that has a list price of $13,190 (including tax consequences) more than a comparable car with a traditional gasoline engine. Additionally, the annual ownership costs (other than fuel) for the hybrid were expected to be $400 more than the traditional model. The EPA mileage estimate is 19 mpg for the traditional model and 22 mpg for the hybrid model. a. Assume that gasoline costs $3.25 per gallon and you plan to keep either car for six years. How many miles per year would you need to drive to make the decision to buy the hybrid worthwhile, ignoring the time value of money? b. If you drive 15,000 miles per year and keep either car for six years, what price per gallon would make the decision to buy the hybrid worthwhile, ignoring the time value of money? c. Rework parts (a) and (b) assuming the appropriate interest rate is 10 percent and all cash flows occur at the end of the year.