NEVER had a coffee from Starbucks, so this will NEVER be an issue for us. Wife LOVES her coffee (beans from a roaster in the Blue Ridge mountains)...she is looking to give the ‘Bulletproof’ recipe a try in the near future.
My wife usually makes her own cup before leaving home to go anywhere. If I’m along (non-coffee drinker), I enjoy teasing her about how her cup is empty within 5 minutes of hitting the road. I say: “see, you could have drank that at home, and not had to use a spill proof cup, or watch for bumps in the road”.
One time, just a mile from home, she had just put it down in the holder when she hit a deer, or she would have had hot coffee all over her, and the dash.