Figure 3: GHG emissions intensities per mile for CDVs in 2014 and 2030, and ATs in 2030.
From: Autonomous taxis could greatly reduce greenhouse-gas emissions of US light-duty vehicles

Cost-optimal vehicle technologies indicated by asterisks. Both full-sized (purple) and right-sized (red) ATs are shown, each with three sets of electricity GHG intensity assumptions. Right-sized ATs have per-mile GHG emissions intensities 87–94% below 2014 ICEVs, and 63–82% below 2030 HEVs, depending on electricity GHG intensity.