A group of California drivers has sued BP, Walmart, 7-Eleven, Circle K, Marathon Petroleum and Albertsons, accusing the fuel retailers of using artificial intelligence to keep petrol prices artificially high. The federal complaint, filed in Sacramento on 22 June 2026, alleges that an AI-based pricing tool helped inflate costs at the pump across California. The filing says the case matters because it turns a routine pricing system into a question…