Top Volkswagen exec to appear before a congressional panel next week by Benjamin Snyder @FortuneMagazine October 2, 2015, 2:44 PM EDT E-mail Tweet Facebook Linkedin Share icons Michael Horn, Volkswagen’s top U.S. executive, will testify before a congressional oversight panel due to the German automaker’s emissions scandal. In September, news came to light that 11 million Volkswagen cars around the world had software, dubbed “defeat devices,” installed to make diesel emissions appear lower than in actuality. A panel spokesman told Reuters that the House Energy and Commerce Committee will hold the panel on Oct. 8. It is also slated to hear from the U.S. Environmental Protection Agency. “The American people want to know why these devices were in place, how the decision was made to install them, and how they went undetected for so long. We will get them those answers,” said U.S. Representative Tim Murphy of Pennsylvania. He will be at the hearing as chairman of the Energy and Commerce Subcommittee on Oversight and Investigations, Reuters reported. Volkswagen is reportedly holding $7.2 billion aside to cover costs related to the scandal. The EPA, meanwhile, has widened the probe to include other automakers in an effort to deduce whether Volkswagen is the only car brand to have cheated the system.