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Nissan explains its preparation work with the GTR LM Nismo

There are eight races in the World Endurance Championship schedule, the third one is the 24 Hours of Le Mans. The Nissan GTR LM Nismo has been designed specifically to compete in that race, and has missed the first two races of the season in order to carry out more testing for that third one, the season objective. Plenty of folks would tell you that racing is the best form of testing, but the Nissan project is doing things so differently that we wouldn't be surprised if they said they were testing on Kilamanjaro because that's just what made more sense. In the video, Ben Bowlby - formerly of DeltaWing - and other team reps talk about how the car was designed, how the choices were made, and failing the first rollover-hoop crash test. If they can keep it running, this year's Le Mans will be even more entertaining than usual.

Basic Continuously Variable Transmission explained with Legos

In recent years, the search for better fuel efficiency and smoother shifting has produced automatic transmissions with double-digit gears. Alternatively, the same quest has boosted the popularity and usage of a different type of automatic transmission without any fixed gears, the continuously variable transmission, or CVT. YouTuber Sariel's Lego Workshop recently took the time to build a CVT demonstration model out of Legos to help explain how they work. Sariel begins by showing the model's input and output shafts that are parallel to each other. Each shaft has a cone attached to it, and they are inversely placed so that the large part of one cone is next to the small part of the other cone. The two cones are connected using a rounded rubber band.  By shifting the rubber band up and down the cones, the machine changes the effective ratio between the cones. So, a 1:4 ratio can be smoothly transitioned to 4:1. No clutch is required to operate the mechanism, and it eliminates hitches or pauses between gear changes. CVTs are also advantageous over 9- or 10-speed automatics in that they are far less complex and weigh less.  To demonstrate how the CVT operates in a vehicle, Sariel used a joke about Top Gear. The original Top Gear is represented by a faster-moving car that has the rubber band around the large part of the cone on the input shaft. Top Gear without former hosts Richard Hammond, Jeremy Clarkson, and James May is represented by a slow-moving car with the rubber band around the large part of the cone on the output shaft.  For an even more detailed explanation of how CVTs work — albeit one that doesn't involve toys — you can click here. Technology Toys/Games Nissan Subaru

Nissan's Kelly examined at Japanese hospital after securing bail

TOKYO — Nissan director Greg Kelly was being examined in a hospital on Wednesday, a source said, a day after he was released on bail from a Tokyo jail where his former boss Carlos Ghosn is still being detained. Kelly, an American who was released late on Christmas Day after more than a month in detention, has been charged with conspiring to under-report Ghosn's income. He posted bail of 70 million yen ($640,000). Their Nov. 19 arrests jolted the global car industry and has strained Nissan's alliance with French car maker Renault SA. Nissan's board last month fired Ghosn as chairman and Kelly as representative director, although both men technically still remain board members who can only be removed by shareholders. Kelly suffers from spinal stenosis, causing numbness, tingling and shooting pain in his extremities, according to a video message last week from his wife, Dee Kelly, appealing for his release. The condition compresses or pinches the spinal cord. Those symptoms worsened during his five weeks in the Tokyo Detention Center, his wife said, citing Kelly's lawyer. Kelly was scheduled to have surgery on Dec. 7 in Nashville, Tennessee, but flew to Japan last month after being told that he was needed in person at a board meeting, Dee Kelly said in the video. Kelly was arrested soon after his arrival. Under the conditions of his bail, Kelly is barred from traveling overseas and his residence must be restricted to a designated place, the Tokyo District Court said. Lawyers say that travel exceptions can be made on a case-by-case basis. Kelly walked out of the detention center around 10:45 pm (1345 GMT) Thursday night wearing a light-colored jacket and was whisked away in a black taxi. Japanese media showed footage of Kelly entering a hospital around midnight. After his release from detention, Kelly issued a statement through his lawyer saying he had not falsified any documents and looked forward to restoring his honor in court. "I believe my innocence will be revealed in the trial," he said. Kelly also said in the statement he wanted to see a doctor immediately and get the appropriate treatment or operation originally scheduled for early December. The office of his lawyer, Yoichi Kitamura, did not respond to requests for comment. Ghosn was re-arrested on Friday based on suspicions that around October 2008 he shifted personal trades to Nissan to make it responsible for 1.85 billion yen ($16.6 million) in appraisal losses, prosecutors said.