Electric cars aren’t selling nearly as well as many predicted. Why is that? Research suggests a host of reasons—including a basic lack of familiarity, a high price tag, misconceptions about the cars—and ineffective government incentives. Other research turned up similar findings. Some 71% of drivers in a study by the Institute of Transportation Studies at the University of California, Davis, said they were much more likely to buy an electric car after they test-drove all-electric Mini Coopers.