Just singin' in the rain while behind the wheel of a drifting supercar.Car spotter 'hannes911' was lucky enough to witness a track day that took place in Gothenburg, Sweden a few months back. What makes his video especially interesting are a couple of things.For starters, some of the cars that participated included a Nissan GT-R, BMW M5 and M6, a Porsche 911 GT3, a Lamborghini Gallardo Tricolore, and a Ferrari F430. The second thing was that on this day, track conditions were not exactly optimal.In typical Scandinavian weather, there was rain, making for a wet track. So what to do? Take the opportunity to practice wet drifting and driver/car control. For the inexperienced driver, it certainly wouldn't be hard to smash your beloved machine into the wall. But if you know what you're doing, this could undoubtedly be a fun day.