Like the others, sitting in 87 degree weather would have done me in as well. In fact, I would have only made it 5 minutes max before I became a neurological mess - blurred vision, slurred speech and being unable to get sentences out correctly, trouble walking - balance, stiff legs, spasticity, etc. And then to get in a car and drive 2 hours would only add to the mess.
Also, like others mentioned, how did you feel after you cooled down and rested?
I hope you are doing better.