Many environmentalists hope, and oil producers worry, that we’re entering a post-car era spearheaded by tech-savvy, bike-path-loving, urban-dwelling, Uber-using millennials—leaving behind generations of automobile owners whose thirst for gasoline seemed limitless. “Millennials have been reluctant to buy items such as cars,” a Goldman Sachs GS 1.30 % analysis concludes, turning to “what’s being called a ‘sharing economy.’ ” David Metz, former chief scientist at England’s Department of Transport, claims that the growth of Uber and its competitors guarantees a decline in automobile and fuel use. Thomas Frey, the DaVinci Institute senior futurist, says that “wealthy economies have already hit peak car.” The idea may seem plausible given recent history: tepid new-car sales, fewer miles driven per capita and shrinking gasoline use. In reality, it’s poppycock: The car habits of young adults ages 18-33 simply reflected a lack of jobs and money. Now J.D. Power finds that millennials are the […]