Gatik raised a $200M Series D. The more interesting number is the $600M in contracted revenue already sitting behind the round. The autonomous trucking industry spent a decade promising coast-to-coast freight. Gatik shrank the problem to fixed middle-mile routes between distribution centers and stores, drove the same loops over and over, and only then took the driver out. That narrow scope compounds. Gatik says it's completed 100,000+ fully driverless orders at 99%+ on-time delivery, with…