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Connected and autonomous vehicle (CAV) applications focusing on energy optimization have attracted a lot of attention recently. However, it is challenging to evaluate various optimizations and controls in real-world traffic scenarios due to safety and technical concerns. In light of this, our previous work has developed a hardware-in-the-loop (HIL) testbed with a laboratory powertrain research platform to evaluate CAV applications. An actual engine is loaded by a hydrostatic dynamometer whose loading torque is controlled in real-time by the simulated vehicle dynamics. The HIL testbed mimics the performance of a target vehicle and the dynamometer generates the same load as the target vehicle. In this work, the HIL testbed is further enhanced to match the performance of actual testing vehicles at the Federal Highway Administration (FHWA) and a living lab is developed to incorporate real traffic information. The …