JR Motorsports driver Sam Mayer took center stage in the NASCAR Xfinity SeriesTM race at Martinsville while promoting a rocking new album from Big Machine Records recording artist JOHN 5. Mayer’s No. 8 Chevrolet Camaro sported an eye-catching livery that matched the cover art for guitarist and solo artist JOHN 5’s new album, “Sinner,” which released during the Martinsville race weekend. Now fans can add Mayer’s JOHN 5 “Sinner” No. 8 Chevrolet to their die-cast collections.