What to see within driving distance of LV

We plan to hire a car for a day or two and have the following on our list of places to see :
Hoover Dam
Valley of Fire
Lake Mead
I am hoping we can do all 3 in one day - is that do-able ?
Any other suggestions of places we should not miss within a couple of hours of LV ?
Thanks
L2H
Hoover Dam
Valley of Fire
Lake Mead
I am hoping we can do all 3 in one day - is that do-able ?
Any other suggestions of places we should not miss within a couple of hours of LV ?
Thanks
L2H