Sam is renting one of two cars to go on a 300 mile trip. The first car can travel 75 miles on 5 gallons of gas. The second car can travel 240 miles on a 20 gallons of gas. Each car costs the same to rent. And Sam wants to rent the car with better gas mileage. Sam estimate that he will pay 49.42 for every 14 gallons of gas he has to buy. Which car should Sam rent, and how much money should Sam bring for gas?