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After Hours Showdown takes place Saturday, August 22, 2026, at Contra Costa Fairgrounds in Antioch. This nighttime automotive event features custom trucks, cars, lowriders, motorcycles, classics, Can-Ams, and lowrider bikes. The show includes live music, food vendors, official event models, LED robot performers, lighting displays, and awards. The event offers a family-friendly atmosphere with entertainment for spectators and participants alike.
