Complex sentence: In addition, Mark Martin continued his "Salute to You" tour for an encore with new sponsorship from AAA and 3M, who replaced Viagra on the hood of the No.6 Ford.
Split into simpler sentences: In addition, Mark Martin continued his "Salute to You" tour with an encore with new sponsorships from AAA and 3M for their No.6 car. Those new sponsorships replaced Viagra on the hood of the No.6 Ford.