Las Vegas, Nevada
Great driver who really knew his stuff. Stopped several times along the scenic loop to point out the ground squirrels and different plants that the native americans used to eat.
Only 5 on the trip so plenty of time to spend at the stops.
Would suggest however spending more than 30 mins at the visitor centre, enough there for at least an hour. Also the trip took about 5 not 6 hrs, still good value though.
Great packed lunch of freshly made sandwich, back of crisps (Chips to those in the US) and a bag of mini cookies