No police department in the world has the resource or staff to properly do an investigation of these incidents. Unrealistic take: The police should have kept t

No police department in the world has the resource or staff to properly do an investigation of these incidents. Unrealistic take: The police should have kept the vehicle and demanded the source code be released so that it may be investigated if proper safety mechanisms have been implemented and if any errors in the systems may have caused it to hit the pedestrian. In the meantime the vehicles running on the same hardware and software should be put on probation. Realistically: Police cannot investigate this and as long as these vehicles are classified more like computers and less as an aircraft these incidents are "glitches".