That's an excellent point. Daily commuting could be done on a single charge. If longer trips could be accomplished with a rest break every hour or so on the road that might be a good selling point. But the rest break would have to be reasonable and not significantly impact the total trip time. Stopping for 5, even 10 minutes to recharge the car and discharge the bladder is reasonable. Having to kill and hour to charge for another hour's drive is not.
The kinds of duty cycles you're talking about are probably getting close. That kind of capability (and reasonable initial cost and cost per mile) would make me look at an EV.
Like I keep saying range is irrelevant. Recharge time is the key factor.
Hybrids work, they cut fossil fuel use and don't stress our sadly inadequate electric grid. The one I've driven was a great drive and owner loves it.
Plug-ins, however, are nearly as complex (moreso?) and stress the national grid, wide acceptance at this time would crash the system. There are far too many other demands on electricity to make that path reasonable for a long, long, time. The other eco-fetish for corn based motor fuels "only" effected food price and availability (and older vehicles), black or brown outs threaten society itself - not to mention all those plug-in wonder cars.
Add to that the several published studies showing the very high pollution costs of electric generation and America's unwillingness to modernize production and plug-ins don't even score.
Finally, the comment about making a pit stop ever hour or so while in a long trip would leave the most patient driver babbling about demons before he or she got to El Paso.