I posted this comment earlier under the Replacing Your Battery Pack thread, but the more I thought about it, I feel compelled to start this idea as new topic:
Thinking outside the box, it would be an interesting side business for someone or Tesla to have locations, perhaps at the Super Charging spots, where you could pull in, have your battery swapped out in 5-10 minutes, and get back out on the highway toward your next pit stop. This would be like an ICE car filling up at a gas station and leaving. This battery rental system would make traveling across multiple States fairly stress free, at least from a range-anxiety standpoint.
Granted the devil would be in the details, but something like temporarily renting a battery pack and then on your return trip you could revisit the rental location to pick up your personally owned battery, which they would have fully charged by then, for getting back to home base.
I am close to retirement, or I'd look hard at developing a business plan for this concept, so feel free to take this idea and make your fortune. If Apple can spawn a mega after market industry, then so can Tesla. Go for it.