Before COVID-19, I'd drive nude or bottomless all the time for trips over 15 minutes long. Doesn't matter what temperature it was outside. (Okay, honestly, 20F/7C was usually a cut off for me.)
More of a safety thing than dedication though. Clothing irritates me and causes me a lot of distractions if I wear them for too long. Need to be able to focus to drive safely.
Always sat on half a towel with the other half ready to flip over my lap. Trousers ready to pull up when needed. Never got into any problems.
With COVID and lockdowns, all my trips are under 15 minutes and all combined into one day. It's not worth the trouble of getting undressed when I'd get dressed again 5 minutes later.
Totally different story if I could walk from my house to my car nude.