Was looking through the EPA data and noticed that they had some data on the 2023 Cruise AV here that I hadn't seen before. It's not in the actual datafile but it's in the other listings.
That is probably the Bolt version, not the Origin. I believe I read somewhere that all the navigation computers, sensors, etc. drew a steady 4 kW load. That will kill the road efficiency. Makes you wonder if Ultra Cruise's additional processors/hardware will have a significant range impact.