In Bangkok, tuk tuks buzz the streets like mechanical locusts, their two-stroke engines buzzing furiously, spitting blue smoke and venom. They are the best way for many to navigate the hive-like city, tiny taxis that can slice through the choking swarms of traffic. In fact, they’d work out pretty well in many of the world’s crowded cities. But, you know, there’s that nasty two-stroke smoke. So in order to thrive in Europe, where vehicles aren’t allowed to live and propagate if they spew caustic vapor, they’re going electric. Dutch company Tuk Tuk Factory (TTF) is making them, basically building tuk tuks around gigantic led-acid batteries. The electric tuk tuks are good for about 50 miles on a charge, but take about 12 hours to juice up. Price? $15,000 to $19,000. Well, at least they look neat.