but grant reports on a teen who, at 15, became one of the youngest professional racecar drivers ever. >> growing up in stockdale, ohio, zach veach always dreamed of racing cars. >> well, i started driving go-karts -- which, they're, you know, the starting series if you want to be an open-wheel driver. and the first class you start off in runs about 50 miles an hour, and it's just little yamaha engines. but i kept moving up in the go-karting series with the faster go-karts and faster go-karts. and i was gonna be racing in the atlantic championship series, which is an open-wheel car that went 180 miles per hour. but 10 days before my first race, the series was canceled due to the economy. >> but faster than you can say "pit stop," misfortune turned into good fortune. >> three days after my worst day in my life, my dad got a call from michael andretti asking if i'd be interested in driving for his team. >> andretti is one of the biggest names in racing. to be asked to join his team as an adult is an honor. to be just 15 at the time is incredible. >> it takes a lot of talent and hard work