Various reports had the driver going either 85 or 70. I'm not sure the official word is out yet. I haven't checked the news this morning. Either way, it's sad. We've all known folks who pushed the speed limit on a long road trip (and maybe have done it ourselves).
Every time I see one of these stories, I think of a few years ago, when one of my former students was headed to WDW and a wrong-way drunk driver crashed into their van on I-95 in SC. His little sister was killed (she was in middle school) and stepmother critically injured.
Any crash is tragic, but it seems especially bitter when a family is in the midst of something as wonderful as a WDW trip.