However, it came to light that their internal research found most people drink the coffee while driving. The primary reason has been speculated but of course never officially acknowledged as what you suggest.

I'd like to note though that what ever the case, a beverage that she was expected to put to her lips managed to give her horrific burns. And there was, if I recall correctly, quite a few of the same case accident reports at Mcdonalds on record. She was the only one who ended up in high profile litigation though. I suppose my point is that she wasn't silly or unreasonable as the slow drip feed of facts led many people to conclude as they heard it.