IN RECENT MONTHS Tesla has had a bumpy ride. In January the electric-vehicle (EV) pioneer warned that growth would be “notably lower” this year, as motorists’ enthusiasm for battery power loses charge. The same month it had to suspend most production at its giant factory near Berlin because of supply disruptions caused by turmoil in the Red Sea. Its market share in China, the world’s biggest EV market, is falling as it fends off…