In addition to TerraPower, moltexenergy.com desribes another conversation-changer. Not a PWR. Walk-away safe. Molten salt in tubes. Can burn existing waste. Apparently can use Thorium. Projected costs less than coal. Uses existing materials.
The i5 version of the XPS is 70% faster than the i5 in the MBA (8250u vs 8210y) so it seems you are getting a whole lot more for your money in the XPS (or even the MBP)
