Both of those images are computer generated models. They do not show real products, just generic fictional laptops. Intel just needs "a computer" to use in their ads to advertise their products (CPUs). They're not trying to advertise another company's products (laptops). Even the OS depicted in the mockups is a generic, non-specific one. It shares no more similarities with OS X than it does Windows or Linux.
I doubt that the design of the laptop depicted would be feasible as a real product at any rate. The bottom is too thin. At the very least it would not have any type of optical drive, and at worst it's thin enough to not have enough support to keep it from being flimsy.