The new Porsche 911 Challenge is the brand’s most accessible factory-backed race car.Based on the 911 GT3, the Challenge features a 508-hp 4.0-liter flat-six paired with a PDK automatic; a full roll cage, racing slicks, and an air-jack system are all included.Porsche says that when the 911 Challenge goes on sale “at a later date in 2027,” it will cost $275,000.