I discussed this issue recently in Spain with a number of Model S drivers and I was interested to see some public discussion on the Tesla Motors forum recently...
http://www.teslamotors.com/de_DE/forum/forums/free-supercharges-strategic-mistakeI have owned my P85 for nearly two years, and am eagerly awaiting delivery of a new P85D. I am a rabid Telsa fan and shareholder. Given an opportunity, I'm not shy about telling everyone that my experience with my Tesla tells me that electric cars are the future; because they’re just clearly superior vehicles in almost all ways.
Except for long trips. Personally I have never driven my S on a trip over 200 miles. In fact, in my two years of ownership I've almost never charged anywhere other than my garage. For almost all of my daily needs I have no need to charge except at night. But, if I'm going somewhere where my potential distance is anywhere close to my maximum range, I take my ICE. Why? I don't want the inconvenience of potentially having to "seek out" a place to charge.