GM purchases a 5.3% stake in Suzuki.[53][54] The RG Gamma (RG Γ) makes its first appearance in Grand Prix motorcycle racing; Suzuki wins sixth-consecutive manufacturer's title, and Suzuki rider Marco Lucchinelli becomes the 500 cc class champion.[55] German designer Hans A. Muth uses the motif of the samurai sword to create the original GSX1100S Katana, a motorcycle that "typifies Suzuki".[52] Production begins on a second generation of 4x4 utility vehicles with 1-liter engines; the SJ410 is designed for export and sold as the Suzuki Samurai in Canada, and as the Jimny 1000 in some markets.[7][56][57] 1982: Aggregate (i.e., sum-total) motorcycle production at the Toyama Plant reaches 5 million units.[51] Italian Franco Uncini, riding a Roberto Gallina racing team RG Γ motorcycle, takes the Grand Prix championship in the 500 cc class.