11/08/2016 6:21 PM IST | Updated 11/08/2016 6:41 PM IST

How Self-Driving Technology Is Helping Olympic Swimmers Improve Form

BMW is working with the US Olympic team

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RIO DE JANEIRO, BRAZIL - AUGUST 10: Michael Phels of United States in action with Ryan Lochte of United States during the semifinal men's 200m individual medley at Olympic Aquatics Stadium on August 10, 2016 in Rio de Janeiro, Brazil. (Photo by Xavier Laine/Getty Images)

In the every-millisecond-counts world of Olympic swimming, Team USA has an unlikely partner in its quest for gold: A German car company.

Bayerische Motoren Werke AG, or BMW, is using technology originally developed for its autonomous driving systems to help Olympic swimmers scrutinize the minutiae of their form and technique to improve performance. The same LED lights BMW uses in its cars to identify pedestrians and other vehicles are put on swimmers' limbs to analyze different elements of kick and pull.

"We are looking for every edge we can find," said Russell Mark, a coach at USA Swimming. It "helps provide greater information about what changes in body angles are required and how the body is moving in harmony."

The LED-based software package helps Team USA coaches provide instant feedback to swimmers. The software, along with a new racing wheelchair BMW rolled out for the Rio Paralympics, are among the technology initiatives BMW is showcasing at this year's Games.

Adapting the technology used in BMW's cars for Olympians ends up costing about the same as a few 30-second prime-time television spots -- about $300,000 to $600,000 each, said Trudy Hardy, BMW's vice president of marketing for North America. That's a small price to pay for the chance to showcase BMW's engineering capacity and prove it's also a contributing member to the U.S. athletics community, she said.

"There's great storytelling," she said in an interview at the U.S. Olympic guest house in Rio de Janeiro. "There's a strong message out there for the brand. It's just a little bit harder to quantify than digital click-throughs to your website."

The current swimming analysis software was rolled out about a year ago, and it follows the success of the BMW-designed two-man Olympic bobsled at the Sochi 2014 Winter Games. Among other medals, the company says its sled helped the men win bronze, the U.S.'s first two-man bobsled medal in 62 years.

While it was easier to claim credit for the bobsledding medal because BMW built the sled, Hardy expects the training technology to make a difference too.

By the end of the fourth day of the games, the U.S. had secured 18 medals inthe pool, including seven golds. That haul is likely to be expanded laterWednesday, with more swimming finals set to take place.

"Any athlete will tell you that the difference is won not in full seconds, but fractions of a second," she said. "So anything that can help is the difference between a medal and no medal."

As for the issue of Munich-based BMW helping the Americans dominate in swimming, Hardy said the company has different initiatives around the world, but divisions carefully safeguard the technology created for different teams.