Carbon offsets, silicon-wafer batteries, Porsche Turbo S plug-in: Today’s Car News

Audi Q4 e-tron conceptPorsche rolls out one very fast plug-in SUV, just after it outlined a carbon-offset program. And are silicon-wafer batteries a good idea? All this and more on Green Car Reports. The 2020 Porsche Cayenne Turbo S E-Hybrid is the quickest, fastest SUV ever presented from the performance brand. Perhaps it wasn’t coincidence that Porsche also…

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Colorado adopts California electric vehicle mandate

For months, Colorado lawmakers and businesses have taken sides at a figurative continental divide—and not far from the real one—over whether (and how) the state might join California’s Zero Emissions Vehicle program and its corresponding electric-car mandate. We now have an answer. The Colorado Air Quality Control Commission has…