I want to know the answer to the following question:
What car manufacturer hired Petra Haden to perform a capella songs in commercials for their car?
All the background I'm provided with is that "Petra Haden used a four-track recorder to produce an a cappella version of The Who Sell Out including the instruments and fake advertisements on her album Petra Haden Sings:". Is that enough to answer the question?
Answer: no