IndyCar drivers will find an improved track for Sunday's Sao Paulo Indy 300 following changes to fix embarrassing problems that marred the inaugural race on the streets of South America's biggest city last year. Organizers repaved the circuit to try to eliminate bumps that made driving dangerous, added grooves to the slick surface on the front straight, and removed curbs that drivers said hurt the racing. "The problems we had last year weren't anticipated," IndyCar director of operations Bill van de Sandt said. "This year we rectified all those problems. We shouldn't have any problems at all this year with anything on the race track." Read more: http://sports.espn.go.com/rpm/racing/indycar/news/story?id=6443651
