It may have been opening day at IMS for IndyCar drivers, but the real competition was at Riley Hospital for Children.

INDIANAPOLIS (WTHR) - It may have been opening day at IMS for IndyCar drivers, but the real competition was at Riley Hospital for Children.

Will Power and Helio Castroneves talked to children at the hospital while still wearing their racing suits. Then they faced off against other drivers to put together "Riley Wagons" in the "Pit Stop Challenge."

They even raced remote-controlled cars.

Patients and their families were thankful for a little break from the hospital room.

"We met a few of the drivers and we follow the series and we are just happy to be a part of it. Unfortunately we have to be here, but Riley is the place you want to be," said Brandi Teyema, whose 9-year-old grandson Graham is a patient.

"I like that they drive fast and they are friendly," Graham said.

"It's great to meet these kids and man they are really tough. I can't imagine," Power said. "At that age you are meant to be out playing and having fun and they are in the hospital. Obviously have various different issues, but it's really cool to come here. it warms your heart."