Utah / Colorado State Line - Old US Hwy 6 & 50

I ram this at night with a beautiful sky, mountain/desert air & good conversation. East connection on a rocky curving inclined road back to Interstate 70 - it should keep your heart rate up for a few more minutes.

Update: You made need to wait, because in 2015 (after having a party there), the Colorado/Utah state line monument was removed and sent to Grand Junction for restoration.