Not sure if this best fits "other racing series" or "off topic." Maybe a little of both.
If you weren't aware, Team Penske kicks off it's 50th year of racing, between IndyCar, F1, Sportscar, and Stockcar racing. This kicked off with an event here in Charlotte, NC on Wednesday evening.
Can't turn down the invite to an event like that - it was a pretty good time.
Ordinarily I don't get excited about drivers. Some can be a bit of a hassle. Even with that, when Emmo Fittipaldi, Rick Mears, Gil de Ferran, David Hobbs, the Unsers, Bobby Allison, etc. show up - it at least makes you appreciate that it's a big deal! Not to mention former president Bush sending his regards via video message, and Jay Leno showing up to do a stand-up set.
If you're into open wheel racing and haven't watched IndyCar - you should - including this year's 100th running of the Indy 500. If you're any sort of race fan and haven't watched NASCAR, you should as well. Very close, very competitive racing with a pretty wild variety of race tracks and strategy to win any given race.