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Watch some vintage F1 cars blast up a Japanese mountain road

It's a rare treat to see classic Formula One cars racing anywhere, but watching them on a Japanese mountain road is absolutely sublime. The folks behind Motorhead from Japan took over the toll road's twisting stretch of tarmac to turn this impossible dream into a reality. The unusual opportunity of a closed mountain road would be a waste for only two vehicles, and there were plenty of drivers in amazing machines that wanted to blast up the hill. After the vintage F1 cars got their turn, some drifters in a Nissan GT-R and a Toyota GT86 added some tire smoke to the misty mountain air. A couple more GT-R racecars and some modern sports cars eventually joined them. Before the rain hit, this team had quite a party going on. This video features amazing camera work, but the music unfortunately drowns out the chance to hear these amazing racecars. If watching this leaves you wanting more, Motorhead released a video last year of another group of impressive performance vehicles on the mountain road.

This is how ground effects work in a nutshell

There are two ways to generate downforce. One is with all manner of wings and spoilers on the surface of the vehicle. The other is with ground effects. One you can clearly see, the other remains something of a hidden mystery. Fortunately, the good folks at Lotus and Goodwood are here to dumb it down for us non-engineer types. It's called Bernoulli's Principle, named after Swiss physicist Daniel Bernoulli who literally wrote the book on the subject way back in the 1700s. Countless engineers have spent their careers focused on its study and application, but the crux of the matter is that, as the speed of air (or other "fluid") increases, pressure decreases. Play with the air's increasing speed and decreasing pressure just right and you can generate downforce underneath the body of a car without significantly increasing drag as you would with surface spoilers. For evidence of how Bernoulli's Principle applies in practical terms, just look at the last Ferrari to pack a turbocharged V8 in the middle and the latest one. The F40 had a giant wing on the back, where the 488 GTB has none. But because the 488 uses underbody aerodynamics (or "ground effects"), it generates significantly more downforce than the winged F40 ever could, and at lower speeds. Ferrari, however, was not the first outfit to harness the power of ground effects. Lotus did with the legendary 79 that Mario Andretti drove to the world championship back in 1978. That was the genius of Colin Chapman, and to explain how it all works in layman's terms, our friends over at Goodwood Road & Racing brought in Colin's son Clive Chapman, head of Classic Team Lotus, to put together the video above. Related Video:

Lotus pumps Exige up to 430 horsepower

It seems that every few months or so Lotus has yet another lighter, faster version of one of its cars, usually with an emphasis on the lighter part. This time, the latest, fastest Lotus gets a big bump in power. It's the Lotus Exige Cup 430, and it shares its supercharged V6 with the recently launched Evora GT430. That means it makes 430 horsepower, an impressive 55 more than the 375-horsepower Exige Cup 380. It also produces 325 pound-feet of torque. That engine is impressive enough in the Evora GT430, but it becomes pretty breathtaking in the Exige, which weighs about 2,410 pounds. Though that's slightly heavier than the Cup 380, the overall power-to-weight ratio has improved, and Lotus says the 430 can fly to 60 mph in just 3.2 seconds from a standstill. It also boasts a higher top speed than the 380, at 180 mph, which is 5 mph more than the 380. Perhaps more impressive is the fact the Exige Cup 430 is the fastest road car Lotus has tested at its Hethel race track, beating the track-oriented 3-Eleven road car by 1.2 seconds. Among the other interesting features of the Exige Cup 430 are the three-way adjustable shocks as well as adjustable front and rear anti-roll bars. More of the car's total downforce, 45 percent to be precise, acts on the front now, compared with 36 percent on the Cup 380. Four-piston brake calipers are used at each corner. It also comes with a number of weight-saving features as standard, including the lithium-ion battery and titanium exhaust. It can also be optioned to be a legitimate race car with an FIA-legal roll bar and airbag delete. But just the stock car isn't cheap. It has three different price tags depending on whether you purchase it in the U.K., Germany, or France. But the cheapest price in dollars comes from the U.K. where it retails for GBP99,800, or just shy of $131,000 at current exchange rates. Related Video: Featured Gallery Lotus Exige Cup 430 View 9 Photos Image Credit: Lotus Lotus Coupe Lightweight Vehicles Performance