Arguments like yours annoy me on a few levels. First, you've already prejudiced yourself by declaring that you don't think highway driving is a reasonably safe mode of transport. Second, you seem to think that 25% more travel time is unacceptable -- when I travel back to my hometown every few weekends, I experience much greater variation in my travel time than 25% just based on the traffic and whether it is a holiday weekend or not. You've also neglected that most people driving for more than three hours tend to stop and take a break, even if it is not over lunch, e.g. to visit a restroom, buy a bottle of gatorade, whatever.
Third, I don't understand what you mean by "I don't know who has that kind of time on the road" -- just about anyone that is taking a long-distance trip, that's kind of the whole point! Lastly, you indicate that because it is not an ideal perfect solution, it has no business being here at all. Of course they have a lot of work to do, the entire electric vehicle industry is barely entering its infancy; but if technology developers don't push for change to happen, it never will. This is a good step in the electric vehicle industry, and I hope that it increases demand for technological development.