Hi, Dave!
Is a new speed record set?
Hmm. Almost looks like a car advert.
While the van gives the shot a sense of scale, it ends up being the subject, rather than the salt flats. I'm not 100% sure if this is the goal here.
I ran into exactly the same issue while trying to shoot the 120 km / 70 mile long Etosha Pan in Namiba. It is also a salt pan. I'm not quite sure if I ever solved this, but tried shooting it a number of different ways.