. >> this year, charlie finally fulfilled this treme.re, he had to overcome a big hurdle. four years ago, he was told he had diabetes, so he took time to figure out how to cope with his diagnosis and figure out if he could race with diabetes. something indy car officials said was a first. to qualify for these races, you not only had to be fast, he had to be healthy. >> my go-to is high, my reaction time is slow, and i'm not competitive. if i go too slow, i'm not competitive. go low enough, i could pass out and cause an accident. >> his diabetes led him to a response, and his crew cup cysts of mechanics, engineers, and his doctor. he has to make sure his body is ready along with his car, which now has special equipment. >> i wear a continuous glucose monitor which is a sensor i have on my body, and it reads blood glucose, wirelessly transmits to a page i velcro to the steering wheel. >> he has a back-up system designed by his father just in case. >> i have a drink bottle in the car, fill it with orange juice, which is full of sugar. the t