Design News reader Chris Gaylo worked with his son to convert a 1991 Volkswagen Cabriolet to an electric vehicle (EV) with a 50-60 mile range and a top speed of 75 mph. Gaylo, who used lead-acid batteries on his EV, contends that our article about the difficulties facing EV battery makers was skewed. “It should not take nearly the level of effort that’s being professed,” he wrote. See Gaylo’s EV on his website.
Five years ago, optical heart rate tracking seemed like an obvious successor to the popular chest straps used by many fitness buffs, but the technology has faced myriad engineering challenges on its way to market acceptance.
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