Here are five things you must know for Friday, Sept. 29:
VW said the $3 billion charge would pay for the program, which it said was part of a settlement with authorities in North America and is "proving to be far more technically complex and time consuming" than first estimated.
The stock fell 1.6% in trading in Frankfurt.
VW cautioned in late July that while first-half earnings were largely in-line with expectations, it nonetheless saw "challenging" conditions ahead owing to intense competition and its ongoing issues with authorities over diesel emissions.
Musk unveiled his company's Mars-colonization plan early Friday at the 68th International Astronautical Congress in Adelaide, Australia.
Space.com reported on Friday that Musk updated the architecture that was revealed at the same event last year. That previous presentation, according to Space.com, introduced a huge, reusable rocket-spaceship combination called the Interplanetary Transport System, which Musk envisioned helping to establish a million-person city on Mars within the next 50 to 100 years.
Virginia Democratic Sen. Mark Warner said Twitter's explanations of its actions against Russia-linked accounts were "deeply disappointing," and he suggested the company doesn't understand the seriousness of Congress' investigation into Russian interference in the 2016 election, the Associated Press reported. Twitter executives met behind closed doors with staff members of both the Senate and House intelligence committees for several hours on Thursday.
The disclosures by Twitter follow Facebook Inc.'s (FB - Get Report) revelations that about 3,000 ads were purchased by entities with likely ties to Russia and as congressional investigators are examining the spread of false news stories and propaganda on social media during the campaign.
5. -- Whole Foods Market, the upscale grocer recently acquired by Amazon.com Inc. (AMZN - Get Report) , said Thursday it suffered a credit card security breach at some taprooms, restaurants and other in-store venues.
Whole Foods said it uses a different point-of-sale system for its roughly 450 U.S. stores, and that system wasn't involved in the data hack. Amazon transactions also weren't involved, the company said.
"Whole Foods Market recently received information regarding unauthorized access of payment card information used at certain venues such as taprooms and full table-service restaurants located within some stores," a statement from the company said.
"When Whole Foods Market learned of this, the company launched an investigation, obtained the help of a leading cyber security forensics firm, contacted law enforcement, and is taking appropriate measures to address the issue."
More than 40 Whole Foods stores sell beer on tap, according to reports. The company didn't immediately say how many restaurants are in its stores.
Amazon rose 0.4% in premarket trading. The stock has gained 27.5% so far in 2017.
This story has been updated from 6:13 a.m. ET.
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