High Plains Raceway in Colorado is a really fun track, lots of elevation changes, 2 blind up hills, long straight away, 2 sets of downhill esses, hairpins etc. This is my best lap so far. I need to break 2 minutes though. This is in my Viper ACR/TA (9 liter/800HP). A friend with a Viper TA 2.0 9 liter did a 1:57 that day and with Racelogic's analytic software I can see our best laps side by side and I know exactly where and what I need to do to break into the 1:5xs.