A Fiat Panda 4x4... up Mount Etna
When things smoke, it is usually an indication that something unfortunate is imminent. In fact, there are great swathes of things regarded with more affection when they have not recently been, or are possibly about to be, a little bit on fire.
The engine in your car, for instance. Or most types of food. Unclaimed packages in airports. And mountains. Mountains are generally high on the list of things to avoid when they start to do something as uncharacteristic as lightly smoulder. But this being TopGear, I am currently at the base of a mountain frothing great gouts of smoke and steam, preparing to drive to the top. If the health and safety people are reading this, then I couldn't find the appropriate form. Honest.