Walt Mossberg takes on Sony’s new ultralight laptop, the Vaio PCG-TR1A, proclaiming it, “an impressive little machine.” The WiFi-enabled PCG-TR1A (which looks like a slightly different version of the PCG-TR1 which just came out in Japan), weighs 3.1 pounds, is about the size of hardcover book, and has a 900MHz Centrino processor, 512MB of RAM, a 30GB hard drive, a DVD/CD-RW drive, and a built-in digital camera (which Mossberg isn’t particularly fond of).
