Iowa set to stay on IndyCar schedule

The 2009 event, the championship's third visit to Iowa, attracted a sell-out crowd, to the delight of track boss Stan Clement.

"We have a record crowd this weekend, and all the additional seating in place is sold out," he said. "We are working to finalise a multi-year agreement. We continue to develop this event and are excited about its potential and feel great about the current agreement we're working on."

The drivers welcomed the news of Iowa's likely contract extension, and said the spectators made the venue one of the highlights of the calendar.

"It's awesome," said Ryan Briscoe. "There's so much hype here. And I think the Iowans who come to this race are knowledgeable and enthusiastic open wheel racing fans.

"It's just great to come out here and see a packed house. And we wish we had that everywhere we go."

Dan Wheldon, who won at Iowa in 2008, added: "I know a lot of people say that Iowa is in the middle of nowhere, but you know what, we get such a great crowd and they're so enthusiastic.

"As a driver you could put me in paradise, but if there's nobody in the grandstands then it's not good racing."

Calendar changes are expected for 2010, with the Barber Motorsports Park road course in Birmingham, Alabama, angling for an IndyCar race after a large crowd turned out for a pre-season test, rumours of a date in Brazil, and reports in the American media suggesting that the Cleveland airport track made famous by Champ Car could also be under consideration.