Hey, remember that mystery tablet NVIDIA CEO Jen-Hsun Huang was pimping a mere couple of weeks ago? Well, it's made its way to London, and woe betide the Engadget editor who didn't get a hands-on with such an exclusive piece of hardware. So what we're looking at here is a Windows CE-powered, resistive touchscreen display spanning somewhere around 15 or 16 inches, with the same Tegra internals as may be found in the Zune HD or one of them smartbook devices. As we
