I got to see most of the Indy 500, and it was definitely mixed results for the ex-F1 drivers. Marcus Ericsson and Alexander Rossi both crashed out on laps 25 and 144 respectively. Despite all the hype, Fernando Alonso started 26th and finished 21st. It didn't sound like he was happy with his car. Max Chilton briefly ran in 2nd place as they cycled through the pit stops, but eventually ended up in 17th. Finally, Takuma Sato, former Jordan/BAR/Super Aguri driver, won his second Indy 500, running the last few laps under a caution to beat Scott Dixon.
Apparently, Alonso won't be able to compete in the next two Indy 500s, and the commentators were wondering if he'd be too old to return after that. He's currently 39, and Sato just won at 43, so I don't see a problem.
BTW. Max Chilton isn't the only racer in the family. Earlier in the day, his older brother, Tom, was competing in the British Touring Car Championship.