Honda is using the Ozzy Osbourne classic 'Crazy Train' done a cappella by a family in the new commercial for the Honda Pilot.
The ad is done Wayne's World style but with a family gradually all vocally doing the instruments in the song. Wayne's World kicked off the format all those years ago with Queen's 'Bohemian Rhapsody'.
Bob Daisley and Randy Rhodes wrote the song with Ozzy in 1980, a year after Osbourne left Black Sabbath. It first appeared on the 'Blizzard of Ozz' album. It is now considered Ozzy's signature song.
'Crazy Train' has grown over the years, especially in the USA, to fall into that wonderful genre . classic rock.
Source;
http://www.music-news.com/shownews.asp?H=Ozzy-Osbourne-Crazy-Train-Honda-ad&nItemID=44608
