Porsche says batteries are still too heavy for its smaller sports cars

2020 Porsche 718 Boxster TPorsche has committed to making electric cars a permanent part of its lineup, but that doesn't mean every model will get an all-electric powertrain. Batteries are fine for sedans and crossovers, but they're too heavy for the 718 Boxster and 718 Cayman—Porsche's smallest, nimblest sports cars—the automaker's research and development...