Some people wear them for health reasons other than covid. I used to wear one to be separated from terminal flatulence.
My initial reaction is "whatever makes someone feel safer, more power to them".
Inside, I am giggling though. However, I wouldn't be laughing, if I drove without a mask and through some God-awful instance of random, 1 in a billion odds, I caught the virus through the air while driving and met an untimely exit from this world.
I dislike the masks enough to not wear one unless absolutely necessary. I'm not going to wear one while walking or driving alone. That's just me.