155 on the state highways of Montana. 2 year old 95 Z-28 6 speed with brand new rubber and a few mild mods. Did most of the cruising between 125 and 140 and only slowed down to save the gas to make the next station. When the gas stops where close enough a full tank of fuel would last 35 minutes. I passed a Montana highway patrol car going the other way at 125 and he never turned around. Beautiful state they have out there, made a stop at glacier national park and headed back.