Enlarge (credit: Jonathan Gitlin) ATLANTA—Well folks, they've done it. With the 2017 Corvette Grand Sport, Chevrolet may well have built the best Corvette ever. That was our take-home message after a day spent driving the car at Atlanta Motorsports Park and on the sinuous nearby mountain roads. The concept behind the car is simple but effective: carry over all the suspension and aerodynamic goodies from the range-topping Z06 without the overheating problems that have beset that model's supercharged 650hp (484kW) engine.