In Utah County south of Salt Lake City. All the photos in this travelogue were taken at anywhere from 65 mph to 85 mph. (Our grandson, who drove us, averred that he never drove over 81.5 mph, on the increased amount of highway where the speed limit was raised to 80 mph). Driving this road frequently, as many do, tends to dampen the appreciation of the varied and sometimes-dramatic landscape on this nearly 300-mile stretch of highway on the main corridor from SLC, with connecting I-70 from Denver in central Utah, to Las Vegas and southern California. So forgive a tad of blurriness, since the scenery never stood exactly still.