I keep a glass in my car frequently due to my friends never having proper glassware or even adequete glassware. If I go to a party and it's byob I will bring a glass with me then take it home with me. I hate solo cups even worse then drinking out of the bottle.
Moral of the story. Wrap a pint glass up and put it in the glove box.
Primary: Bavarian Hefe, American Amber
Secondary 1: Bavarian Apple cider/apfelwein
Drinking: SNPA Extract Clone, Red ale. Wannabe IPA, Apple/blueberry/pomegranate/rasberry/white grape.... cider