When we picked up our new TT at the dealer, the sales guy came out with a Home Depot Ryobi impact driver. He was going to tighten up all the nuts on the dual cam WDH and ball to get us off the lot faster. Impact drivers must have LOTS of torque... :B
I had taken a torque wrench with me and had to ask him to kindly step away from the TT please. :M
I wonder how they put customer's wheels back on in the shop when they do service work? I do know first hand that they can't even properly tighten a #8 wood screw.
Actually, impact drivers generate up to about 2,000 in-lbs ( 167 ft-lbs) which is pretty darn high for a battery operated device. For a number of reasons, not appropriate for automotive and related work. Excellent for house framing with construction screws. I framed a large house with one and would never go back to nails. I saw a mechanic on one of those car restoration shows use an impact drive on a customer's lug nuts. The boss found out and gave him !@#$ and nearly fired him.