I'd focus on 2+ car households. I would love to have an electric that doesn't suck and another car for the wife, traveling, hauling kids, etc. The Tesla doesn't work for me in this case because of its price and the other EVs are not interesting enough for me, but hopefully that will change as the prices come down and the tech spreads out.
It sounds like you're not in the Model S market segment. Folks that can buy cars in the $50k-$80k range typically wouldn't balk at the cost of renting a car for the weekend. The hassle, maybe, but not the cost.
There are also lots of folks & places whose weekend trips are inside the range of the Model S (consider Boston -> Martha's Vineyard, or Manhattan to The Hamptons for instance).
$179. Still not seeing "hundreds of dollars" here.
There are any number of two car households where one car is unsuitable for long family trips. Somehow they exist just fine.
I do agree with you that the Tesla is not a mass market vehicle yet. But not because of the 450-mile trip issue. It is because most people/families should not (or cannot) be buying a $50,000 car, even if it means saving a few thousand dollars a year in fuel costs. It would take too long (if ever) to break even on the increased cost. Once EV's get down to more competitive prices, then it starts making more sense. However, if you have the cash, and you like the idea of the Tesla, then yes you should go for it, because without early adopters, Tesla could end up folding.