There's nothing quite like the roar of a revving McLaren engine to set a petrolhead's pulse pounding, or the full-throated scream as it tears across the tarmac.
Yet new gas-fuelled engines like McLaren's could be illegal in many countries by 2030. The supercar maker, like all automakers, has to go electric - but that's easier said than done for a niche player that can't compromise the performance, and racing experience, that supports its rarefied pricing and exclusivity.
McLaren could probably produce a fully-electric vehicle tomorrow, said Ruth Nic Aoidh, the British carmaker's executive director for purchasing. But the weight of today's batteries "would kill all of the attributes that make a McLaren a McLaren."