Dan Wheldon

IndyCar unveils 2018 race car at auto show in Detroit

IndyCar unveiled its 2018 race car — and Mario Andretti is evidently a fan.

"I hear a lot of positives, and there is a negative in all this," the 77-year-old Andretti said playfully. "I don't have a ride yet."

Andretti's talk of getting behind the wheel again was a light moment during IndyCar's upbeat presentation Tuesday at the North American International Auto Show. Josef Newgarden, the defending series champion, described the new car at length, saying he hopes it will be a step in the right direction in terms of safety, aesthetics and racing excitement. IndyCar CEO Mark Miles sounded confident as well.

"It's almost eerie because we are...