Ralph DePalma dominated the 1912 Indy 500 in the #2 Mercedes, taking the lead on lap 3 and holding it for 195 straight laps. However, on lap 198, the Mercedes engine "done blowed up" with a broken rod. DePalma and his riding mechanic pushed the car to the pits and retired from the race.
Three years later, 1915, DePalma got his Indy win, again driving a Mercedes. In 2015, the Speedway and the Germain factory collaborated on demonstration laps...
The Andretti Curse at Indianapolis was an actual thing, of that I am convinced. Consider, for example, the Unser clan... they can't go near the place without Borg-Warner trophies sneaking into their luggage. But for the Andretti tribe, the curse was nearly absolute. There was just a single exception... 1969. And when Mario won the 1969 Indy 500, it was also the first success there for Andy Granitelli, after many heart-breaking attempts. The result was a very famous victory lane kiss...
Dick Mann won the 1970 Daytona 200 aboard this Honda CB750. The Daytona 200 was a hugely important and prestigious event, but the AMA Grand National schedule was more heavily weighted toward dirt flat track than road racing. Mann also excelled as a flat tracker.