Bentley on Wednesday unveiled its first fully electric vehicle, betting that wealthy buyers want zero-emission motoring without sacrificing the design cues that have defined the British luxury carmaker for more than a century. The launch of the Torcal SUV comes just months after Ferrari’s first EV drew criticism from some enthusiasts for bearing little resemblance to the Italian brand’s traditional low-slung, gas-powered sports cars. Bentley’s debut EV, by contrast, is unmistakably part of the family. It retains styling cues from the company’s combustion-engine models, right down to diamond-shaped lights designed to evoke a traditional front grille, even though EVs do…