Marco Simoncelli at the Dainese D-Store

MotoGP star Marco Simoncelli will appear at the Dainese D-Store in San Francisco on Wednesday, July 21, prior to the July 23-25 Red Bull U.S. Grand Prix at Mazda Raceway Laguna Seca. The 2008 250cc world champion and current San Carlo Gresini Honda rider will be available for photos and sign autographs from 4-6 p.m. The D-Store is located at 131 S. Van Ness Ave.