FILE - In this April 21, 2016 file photo, Robert Giuffra, an attorney for Volkswagen, leaves the Phillip Burton Federal Building after a court hearing, in San Francisco. A $15 billion settlement over ... more 
FILE - In this April 21, 2016 file photo, Robert Giuffra, an attorney for Volkswagen, leaves the Phillip Burton Federal Building after a court hearing, in San Francisco. A $15 billion settlement over Volkswagen's diesel emissions cheating scandal faces a critical test, as a federal judge in San Francisco decides whether to grant it preliminary approval on Tuesday, July 26. (AP Photo/Jeff Chiu, File) less 
1 / 30
Associated Press | Photo By Jeff Chiu, File
Tue, Jul 26, 2016 12:09 AM EDT