Design of external rear-view mirrors on cars have been streamlined from flat, circular discs to a rounded hemisphere in order to reduce drag coefficient and improve fuel economy. calculate the annualized amount of fuel in liters and money in usd saved by the rounded design as compared to an older flat design. assume mileage of 24,000 km/yr, with mean speed of 95 km/hr, engine efficiency is 0.30, energy value of gasoline is 44,000 kj/kg, density of gasoline is 0.75 kg/l, density of air is 1.20 kg/m3 and cost of fuel is $0.90 /l