Microsoft was out Friday helping people channel their inner Jimi Hendrix or Eddie Van Halen.
The Microsoft vans made stops this week in San Francisco, including in front of CNET's South of Market headquarters. Another van cruised the streets of Boston.
Next week, the vans will be in Los Angeles and New York.
Guitar Hero is a guitar-playing simulation game that challenges users to hit a correct sequence of buttons on a toy guitar and do it in rhythm to music. The game retails for about $87.