General Motors CEO Mary Barra speaks to reporters after a meeting with Sen. Sherrod Brown, D-Ohio, and Sen. Rob Portman, R-Ohio, to discuss GM's announcement it would stop making the Chevy Cruze at its Lordstown, Ohio, plant, part of a massive restructuring for the Detroit-based automaker, on Capitol Hill in Washington, Wednesday, Dec. 5, 2018. General Motors is fighting to retain a valuable tax credit for electric vehicles as the nation's largest automaker grapples with the political fallout triggered by its plans to shutter several U.S. factories and shed thousands of workers. (AP Photo/J. Scott Applewhite)

FILE - In this March 15, 2017, file photo, a passenger enters an Uber car at LaGuardia Airport in New York. Taxi regulators on Tuesday, Dec. 4, 2018, in New York City, approved new minimum pay standards for app-based car services that they say will raise drivers' annual earnings by $10,000 a year. (AP Photo/Seth Wenig, File)

In this Nov. 26, 2018, photo, President Donald Trump speaks to members of the media before boarding Marine One on the South Lawn of the White House in Washington. Trump has moved steadily to dismantle Obama administration efforts to rein in coal, oil and gas emissions, even as warnings grow _ from his own administration and others _ about the devastating impact of climate change on the U.S. economy as well as the earth. Trump has dismissed his administration’s warnings about the impact of climate change, including a forecast, released Friday, that it could lead to economic losses of hundreds of billions of dollars by the end of the century. (AP Photo/Andrew Harnik)

In this photo taken by Alexey Avanesyan, Alexander Kuznetsov, Russian rapper also known as Husky gestures as he waits for a court hearing in Krasnodar, Russia, Thursday, Nov. 22, 2018. The Russian rapper is facing two weeks in jail for performing on a car after prosecutors banned his gig for going against the government. (Alexander Avanesyan via AP)

FILE- This Oct. 3, 2018, file photo shows the logo of Tesla Model 3 at the Auto show in Paris. U.S. securities investigators have subpoenaed information from Tesla about production forecasts for the Model 3 electric car that were made last year, the company acknowledged in a regulatory filing Friday, Nov. 2. The disclosure in Tesla’s quarterly financial report also says the Securities and Exchange Commission subpoena covered other public statements made about Model 3 production. The filing also says Tesla is cooperating with a Justice Department request for information about production. (AP Photo/Christophe Ena, File)

FILE - In this Dec. 13, 2016, file photo, a skylight is reflected in the rear window of a Waymo driverless car during a Google event in San Francisco. Google's robotic car spin-off Waymo is poised to become the first to test fully driverless vehicles on California's public roads. (AP Photo/Eric Risberg, File)

FILE - In this Dec. 10, 2015, file photo, vehicles make their way westbound on Interstate 80 across the San Francisco-Oakland Bay Bridge as seen from Treasure Island in San Francisco. California officials on Friday, Oct. 26, 2018, blasted the Trump administration's plan to freeze vehicle emissions standards, saying it threatens public health and the environment and was based on a flawed scientific analysis. (AP Photo/Ben Margot, File)

FILE - In this Oct. 9, 2018 file photo exhaust pipes of a car are pictured in Berlin, Germany. The German government is putting pressure on the country’s automakers to fix diesel cars with excessive emissions, in a bid to placate drivers angered by the prospect of driving bans in major cities. (AP Photo/Michael Sohn, file)