Efficient Tour Group: 7 days tour 6 states

My parents are planing to sign up for a vacation package that bring tourist drive around 6 states in the wild west in 7 days with guide full trip.

There is their road map:

Utah: Salt Lake City -> Idaho: Idaho Fall -> Wyoming: Grand Teton -> Devils Tower -> Montana: Yellowstone -> South Dakota: Mt. Rushmore -> Colorado: Steamboat -> Denver -> SLC