Edmunds Inside Line Blog Colorado. GT-R vs the Rio Grande
But the 160 also goes through a lot of small towns, nearly all of which drop the speed limit down to 35 mph. Combine that with a healthy population of vacationers towing trailers, and the pace can be infuriatingly slow when you're driving something like a GT-R. The upside is that it ends up averaging 20 mpg the whole time we're in Colorado. Still, next time I'll be taking U.S. 50.