From Porsche Newsroom:
"The Porsche GT Team campaigns a pair of 911 RSR finished in special liveries to bid farewell to the GTLM-class of the IMSA WeatherTech SportsCar Championship. At the final round of the season on 14 November at Sebring – the last race for the works team in the sports car series – the two vehicles will be decked out in an adaption of the American national flag. Emblazoned in letters on the underside of the rear wing is the sentiment “Thank You”."
"The Porsche GT Team campaigns a pair of 911 RSR finished in special liveries to bid farewell to the GTLM-class of the IMSA WeatherTech SportsCar Championship. At the final round of the season on 14 November at Sebring – the last race for the works team in the sports car series – the two vehicles will be decked out in an adaption of the American national flag. Emblazoned in letters on the underside of the rear wing is the sentiment “Thank You”."