The U.S. National Highway Traffic Safety Administration stunned safety advocates by proposing new vehicle design rules that it says will help reduce pedestrian deaths. The rules will likely change vehicle design permanently.
Bumper height needs to be standardized so they match up properly. One of the biggest safety issues is how modern SUV bumpers don't align with cars bumper bars.
Maybe this is the point, but that might cause SUVs to be prohibitively unsafe, because their center of momentum would be so high relative to impact height. For example, if an SUV with one of these low bumpers hit a barrier, it would probably perform a front flip over it 😂