Nursing attendant Tracie Bell helps manage patients at the ophthalmology clinic at Los Angeles County Harbor-UCLA Medical Center. The clinic created a color-coded system to reduce wait times for patients. Anna Gorman/Kaiser Health News hide caption

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Anna Gorman/Kaiser Health News

Toyota Motor Corp's Managing Officer and Chief Communications Officer Julie Hamp speaks to media during a news conference in Nagoya, central Japan, in this photo released by Kyodo on June 18. Kyodo/Reuters/Landov hide caption

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Kyodo/Reuters/Landov

Toyota Motor Corp's Managing Officer and Chief Communications Officer Julie Hamp speaks to media during a news conference in Nagoya, central Japan, in this photo released by Kyodo on June 18. Kyodo/Reuters/Landov hide caption

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Kyodo/Reuters/Landov

Vehicles in the lot of a Northbrook, Ill., Toyota dealer last October. Scott Olson/Getty Images hide caption

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Scott Olson/Getty Images

Toyota has agreed to spend more than $1 billion to resolve lawsuits stemming from "unintended acceleration" cases. In November, the company displayed new cars at the Los Angeles Auto show. Kevork Djansezian/Getty Images hide caption

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Kevork Djansezian/Getty Images