Stacks of promise

摘要

It's a rain-soaked morning on the M25. Having negotiated the outskirts of suburban Surrey, we're splashing through puddles on the UK's busiest motorway. As road tests go, it doesn't get much more 'real world' than this - which makes it the perfect place to put the futuristic Toyota Mirai through its paces. Fuel-cell vehicles have existed in prototype form for decades - the principle itself dates back to the 1830s - but the Mirai is one of the first true production cars to embrace the technology. Admittedly, at £66,000 (or £61,500 with the government's zero-emissions grant) it's not a mass-market proposition just yet. In theory, however, you can speak to your local Toyota dealership about buying one.