2006: In December 2005, Michael announced he would come out of retirement to race with his son Marco at Indy in 2006. Michael was an also-ran most of the day, but managed to stay on the lead lap all day. During a caution on lap 160, Michael (along with Sam Hornish, Jr.) ducked in to the pits to top of his fuel, in hopes of going the rest of the race without another stop. After the leaders sequenced through yellow flag pit stops, Andretti remarkably inherited the lead on lap 194. The race went back to green with 4 laps to go with Michael leading, and his son Marco behind him in second place. A lap later, Michael is quickly overtaken by Marco, who appears on his way to victory in his first race. Michael attempts some mild blocking, in order to protect his son's lead, but he is quickly passed by Sam Hornish, Jr., driving for long-time rival car owner Roger Penske, Marco ends up losing the lead on the final straightaway to the finish line, and the father and son Andrettis settle for 2nd and 3rd.