INDIANAPOLIS Traffic's a mess on 16th and Georgetown, so if you're not already in the stands at Indianapolis Motor Speedway, sit back and follow the action here.
The 33 drivers for today's Indy 500 have been introduced, Gen. Colin Powell addressed the crowd, and a B2 bomber buzzed the speedway.
Powell drove a Corvette convertible pace car to lead the field to the start of the race, which officially began when Reggie Miller dropped the green flag.
We'll provide periodic updates right here, so stay tuned.
4:14 ET: Dan Wheldon has won the 89th Indy 500. Vitor Meira passed Danica Patrick, and so did Bryan Herta, but Sebastien Bourdais crashed with one lap to go, bringing the yellow flag and clinching the win for Wheldon.
Patrick finishes fourth, the same place she started, both of which were milestones as no woman previously had done so well.
4:10 ET: With 6 laps to go, Wheldon passes Patrick again.
4:08 ET: On a restart with 10 laps to go, Patrick passes Wheldon to retake the lead. Fans are on their feet and cheering as Patrick's storybook month plays out spectacularly.
4:02 ET: Dan Wheldon passes Danica Patrick by a whisker at the line as a yellow flag comes out due to Kosuke Matsuura's wheel breaking with 14 laps to go.
3:54 ET: Guess who's leading? Hope you said Danica Patrick. With 21 laps remaining, Patrick leads following a pit-stop sequence. The question now is, does she have enough fuel to make it to the finish?
3:48 ET: A competition yellow flag is out as Roger Yasukawa's car began smoking with 30 laps to go.
3:45 ET: With 35 laps to go, Wheldon leads, followed by Meira, Franchitti, Bourdais and Buddy Lazier.
3:43 ET: With 38 laps to go, the race has gone to a green flag again.
3:35 ET: The front of Patrick's car was fixed quickly and she returns to the track, under caution still, in 10th place.
The top 5 order, with 40 laps to go, is: Wheldon, Meira, Franchitti, Bourdais and Kanaan.
3:31 ET: Patrick spins and triggers a multi-car crash on lap 155. Her car is in the pits being worked on.
3:26 ET: Still under yellow on lap 153, here is the top 5 order: Wheldon, Meira, Franchitti, Bourdais, Kanaan. Also, Patrick is all the way back up to 7th as she's been charging through the field.
Sam Hornish has been checked and released in good condition.
3:15 ET: On lap 146, Hornish's strong day came to a bad end as he wound up in the wall.
With Hornish's exit, the front-runners include several from Andretti Green Racing's stable with the top 5 order: Franchitti (AGR), Kanaan (AGR), Meira (Rahal Letterman), Wheldon (AGR), Buddy Lazier (Panther).
3:09 ET: On lap 140, the top 5 order is Franchitti, Kanaan, Wheldon, Buddy Lazier and Meira. Sebastien Bourdais has worked his way up to 8th, while Patrick is 10th.
2:56 ET: On lap 121, we're back to green.
2:44 ET: On lap 113, Richie Hearn and Scott Dixon collide and go spinning into the wall.
The top 5 order is Kanaan, Hornish, Sharp, Franchiti and Meira. Patrick has moved up to 12th.
2:34 ET: On lap 100, the top 5 order is Kanaan, Hornish, Scott Sharp, Franchitti and Vitor Meira. Patrick is running 15th.
2:08 ET: On lap 78, Bruno Junqueira was overtaking the lapped car of A.J. Foyt IV on the inside when Foyt's car came down and made contact with Junqueira, whose car then spun hard into the wall.
Junqueira is awake and alert but complaining of back pain and will be evaluated at the hospital.
Meanwhile, Danica Patrick stalled her car in the pits during the caution period and lost 12 places, going from 4th to 16th.
2 ET: On lap 65, the top 5 order is Hornish, Franchitti, Kanaan, Patrick and Dan Wheldon.
1:54 ET: Let the records also show that on lap 56, with the leaders taking pit stops, Danica Patrick briefly led the Indy 500 for the first time before she, too, pitted. Patrick became the first woman ever to lead the race.
1:50 ET: The record books will show that Felipe Giaffone was black-flagged just before Marty Roth was issued his; both were sent off the course by IndyCar officials because they were running too slow and considered a danger.
1:46 ET: On lap 45, the top 5 order is Hornish, Franchitti, Kanaan, Buddy Lazier and Patrick.
1:40 ET: On lap 35, the top 5 order is Kanaan, Franchitti, Hornish, Buddy Lazier and Danica Patrick.
1:29 ET: On lap 25, the green flag is back out. Kanaan and Franchitti are still 1-2.
Foyt is awake and alert, complaining of lower back pain and he is being checked out at Methodist Hospital.
1:18 ET: On lap 16, Larry Foyt slides backward into the SAFER wall to bring out the first caution of the race. Castroneves shows lightning-quick reflexes to pull his car out of Foyt's machine after it careens off the wall.
1:13 ET: After 10 laps, Kanaan and his Andretti Green Racing teammate Dario Franchitti are running 1-2, with Hornish, Helio Castroneves, Danica Patrick and Scott Sharp behind them.
1:06 ET: The green flag drops on the 89th Indianapolis 500. On the first lap, Sam Hornish Jr. passes pole-sitter Tony Kanaan for the early lead.
1:03 ET: Powell leads the cars around IMS in a red Corvette.
12:58 ET: Mari Hulman George, chairman of the board of Indianapolis Motor Speedway, has given the famous command for drivers to start their engines.
Fans are on their feet as the engines are rumbling.