Thanks for the tips. Since you guys have been there before, would love your advice. If I have 1 night (2 days) in DV, is racetrack worth going via the jeep rentals, or should I just skip it. Feels really tempting to visit it after seeing so many awesome photos from that area online.
It is going to be 26 miles from Ubehebe Crater to the Grandstand parking area. So maybe 1.5 to 2 hours each way. Thus, the only way I can see this working is if you decide to spend the night camping (or in the car) by the Racetrack. Then at least you will get good light and then the trip will be really worth it.
Otherwise, there are many other great places in the park that you can spend your two days.