Is there plans on making the supercharge stations available for other manufacturer's electric cars (although not for free)? The thing that could really make th

Is there plans on making the supercharge stations available for other manufacturer's electric cars (although not for free)? The thing that could really make this take off is if they can standardize this technology. After all, I don't think gas cars would be as convenient if you had to fill up only at a Ford gas station, or a Honda station, etc. Even if there are multiple charging standards, just have several charging cables at each "pump".