The second generation of Audi’s high-performance R8 sports car made its debut at the recent Geneva International Motor Show. While not much has changed from a design standpoint—its dimensions have increased slightly, giving the car more racecar-like proportions—the 2017 Audi R8 weighs about 100 pounds less than its predecessor. Two versions of the V-10 engine are available, offering 540 hp and 610 hp, respectively. With a maximum speed of 205 mph, the all-wheel-drive car can go from zero to 60 mph in less than…