I have to agree, the Prius is not a good analogy: not overpriced and not a status symbol. I think the VOLT would be more along those lines, at this point, anyway.
If anything, the ipad will come around to being more like a computer in years to come ie: faster, (maybe) more in/outputs, larger versions for professionals. And cloud technology will do away with any need for storage drives. They just need to get that holographic keyboard thing to become reality, too 🙂
Dave J