Set your DVR for the new, 4th season of Rock & Roll Road Trip with Sammy Hagar which premieres tonight at 7pm CDT on AXS TV. This season Sammy's guests include Rick Springfield, Guy Fieri, Maynard James Keenan of Tool, Cheech and Chong, and MORE! On tonight's episode Sammy visits Billy Bob's Texas in Fort Worth to check out some bull riding before sitting down with the legendary Willie Nelson. He then hits the stage with the icon for an impromptu performance. Take a sneak peek below.