Here is a video I made from a San Diego autocross back in June. 720p should give you the best video/sound.
[youtube]http://www.youtube.com/watch?v=4B-gfhSmjQI&feature=youtu.be[/youtube]
[youtube]http://www.youtube.com/watch?v=4B-gfhSmjQI&feature=youtu.be[/youtube]