EXACTLY; THEY ARE IN THE PIPEDREAM STAGE; IT IS A JOKE; IF THEY EVER GET THEIR PATENT THEIR TECHNOLOGY WILL BE OUTDATED. THOSE IN THE PRODUCTION STAGES WILL EVOLVE DRAMATICALLY; SEE ALL OTHER INFANT HIGH TECH INDUSTRIES FOR EXAMPLES
But the swapping infrastructure would cost billions to build and to maintain and it would take years to rollout. A technology like Fisker's would make jbzy batteries obsolete before the swapping stations even exist.