 Mr. Biden immediately took to the stump, claiming that Curtis C. Dunn, the driver of the tractor trailer to hit the Bidens, was drunk at the time of the crash. Here is the problem. This is not true. It's not even close. The fact is that Mr. Biden's wife failed to yield the right of way. And Mr. Dunn put his life in jeopardy when he tried to avoid hitting her car.