Toyota is now officially the global leader in automotive sales, overtaking General Motors. I’d like to believe that part of this has to do with the company’s commitment to fuel-efficiency, including its pioneering efforts with hybrid-electric cars. Perhaps time for some serious self-reflection by the U.S. automotive industry, which talks the talk on efficiency but has struggled to walk it. Left to be seen is whether this symbolic milestone will raise the bar higher on N.A. automobile efficiency. Here’s hoping.