First Lady Michelle Obama may have been booed at NASCAR’s season finale at Homestead-Miamie Speedway. On Sunday Michelle Obama was accompanied by Second Lady Jill Biden and a veteran with his family to honor military troops and families.

Before the veteran family, Mrs. Biden and Mrs. Obama delivered “the most famous words in motor sports”, “Gentlemen star your engine” the flurry of boos can be heard from the crowd.

But according to the ABC World News anchor, President Barack Obama and the White House is downplaying the event stating the it was a loud chaotic event in general and it’s not certain if they were boos in the first place.

http://www.popularcritic.com/2011/11/21/michelle-obama-booed-at-nascar-event/

It's really a little hard to hear, at first it sounds like boos but it's really not obvious. And maybe they were booing Jill Biden?