Ever since someone pointed this out to me, I can no longer take Ubers or Lyfts.
A great majority of drivers apparently do not have their masks on between riders. Most of them put their masks on as riders get in their cars. I have no reason to doubt this behavior as I do this with my own car. Sure it's more comfortable without.
Drivers, please please please. We are in this together. Let's put aside politics or whatever you are trying to prove, and wear a mask during your entire shift.