Road & Track reports that the hot weather played a major factor into the car's performance. August is hot in Germany, and the northern part of the track had a recorded temperature of 111 degrees. This was killing tires and therefore grip. While Kumho has been kind enough to supply the team with tires, an endless supply of rubber doesn't help if they keep getting cooked. In two hours, the team managed just two hot laps, killing 16 tires in the process.
It's not over. A return trip is in the works. The team believes it can slide under the 7 minute mark. Still, it looks like it's going to take some really ideal conditions to make it work. Either way, the Viper ACR is and will remain one of the fastest production cars ever built and something of the likes we'll never see again.