I just flew from Portland to Phoenix to pick up and drive my wife's "new" used Orbital Blue RT-AC back home. Left the Phoenix area late Tuesday afternoon and got back home early Friday afternoon. Rode just a couple of miles shy of 1,600 miles. I averaged between 24 and 32 mpg, depending on how fast I was going and also the degree of headwind I was fighting. I found that the power was more than adequate going up hills. Using the cruise control, when going up a steep grade at 65 or 70 mph the Spyder might drop one mph but maintained speed, no problem. I honestly never had to down-shift to maintain speed. :clap:I've gone through three Goldwings and a Harley Ultra Classic and I must say that the RT-S is the finest, most comfortable touring machine I've ever owned. The tank size has to go, though. Having had aux fuel tanks on all my bikes and my love of Iron Butt rydes, this stopping every 100 to 120 miles sux! :gaah: