I just had a trip with work to Las Vegas and took two and half days to see a bit of the country afterwards on a rented GS. I did about 740 miles to Mt Charleston and then through Death Valley from Shoshone to Beatty and then back past Red Rock Canyon. It was pretty awesome and here are a few pics.
....had a business/fun trip to LV a few years back, couldn’t tack days on but did manage to rent a bike (twice) to use in some free time. Local including RedRock Canyon one day and then a day out loop via Shoshone, Badwater Road and Death Valley - That day included crossing the state line at the ton, well you have to don’t you - it’s the law
If you get there, I think you should be prepared to be somewhat self-sufficient.
I took this picture in early October 2018. After I took the picture I didn't see a building, a car, a person for at least an hour - almost 50-odd miles
If you're doing this route in the summer, you need plenty of water and a plan to deal with punctures and the like.