Ringed by six-foot sheets of bullet-proof glass and a sellout crowd, radio-controlled gladiators battle to the mechanical death. At Robot Wars, a two-day-long competition in San Francisco, CA the crowd roars to the near-constant shriek of metal, the crash of flying parts, and the thunderous beat of techno music. After a series of one-on-one matches, losers and winners alike duke it out in a final death-match called a Melee. In this Melee, the 13-foot Snake curls to use its drill-bit tail on its hapless victim, a tracked vehicle; meanwhile, the simple yet primitively powerful Frenzy hammers the rolling, wedge-shaped Tazbot. From the book Robo sapiens: Evolution of a New Species, page 202-203.