how often do you drive more than 50 miles in a day? If it's rare enough there's a point where it's financially worth driving electric daily and then renting an SUV or whatever for your camping trips.
The cost of renting a small car (SUVs are double the cost) with more range (including the ability to refuel quickly anywhere) is more than expensive enough to make buying a gas car/SUV for everything if you do it even once a month.
A second electric car makes sense if you normally travel 50-100 miles a day. In this case you are leaving the other car/suv home while you go to work. Of course with this range it is starting to become reasonable to just use the electric car for everything. (When I did the math several years ago Tesla was taking about how great superchargers would be once they rolled them out)
