...well, not a complete oval, just 1 banking and the long pit straight at the EuroSpeedway Lausitz or really the correct name Lausitzring in Germany. A similar set-up when the old Formula 1 Grand Prix was at Indianapolis.
The German Formula 3 Championship has been visiting this venue every year since 2006, and even though a Formula 3 car was obviously not a pure oval machine, the EuroSpeedway did help produce revised aerodynamic parts and cooling ducts for other high-speed circuits on the calendars like Spa, Monza, Silverstone, Suzuka, etc.
(take note of the 2 different types of neatly-design cooling ducts on the SLC R1's radiator covers)