McDonald's is once again betting that artificial intelligence can help speed up service at its restaurants, but this time the company appears to be taking a more measured approach after previous AI experiments produced mixed results across the fast-food industry. As part of a broader strategy dubbed "Next," McDonald's revealed that it is working with Google on AI-powered drive-thru ordering technology designed to improve efficiency while maintaining the human element customers still expect. In a statement provided to The Los Angeles Times by CEO Chris Kempczinski, the system is currently about 90% accurate, though the company has not disclosed when it expects a wider rollout. The renewed push comes as McDonald's looks beyond simply being a quick-service restaurant.…