Hammer vs. Auto-Hammer: A PM Lab Test

Popular Mechanics: "But now, here comes Craftsman with something called the NEXTEC Hammerhead Auto-Hammer, a battery-powered tool that drives nails by pounding a little piston up to 3600 times per minute. Is this new device poised to replace the traditional hammer, like the assault that the Kindle (and the other e-books we tested) may deliver to bound books made of paper?"