Its irresponsible for them to hand people hot coffee that you can't consume in a car. What is she going to do, dump it out the window? Test every beverage that she buys at a drive up by opening it and testing it?

Its very typical of you to heap all the blame on the individual. It could be a case of a company making a toy that 1% of the time combusts killing all children involved and you'd automatically hold the company blameless. Damn parents should have had psychic powers if they wanted their kids to survive.