Salt Lake City was basically "home base" for this trip. I flew into it and out of it. Although I had been to Salt Lake City twice before (once only to change planes on the way to Reno NV), it was the first time I spent more than an hour there. I basically only drove on I-15 plus in and out of the airport area.

Some interesting things I learned about interstates in Salt Lake City and Utah:
• HOV lane lasted for 55 miles south of the airport and about 20 north of the airport
• 80 MPH started 75 miles south of airport. I-70 also was 80 MPH. And whereas most states set speed limit at 55 MPH through cities, Salt Lake City is 70 MPH.
• I-15 seemed to be a straight highway but it kept shift left and right every once in a while. I recall 3rd Street on Manhattan Island doing that,
• In construction zones the speed limit is 65 MPH, much faster than anywhere else I have been. I love their driving speed attitude.