Gordy,
Remember each State has its own set of criminal laws and depending upon the wording of the Statute in that particular State determines what acts can be deemed to be (in this case) Manslaughter.
The Louisiana Statute:
https://law.justia.com/codes/louisia...itle-14/rs-31/
I see a clear cut case as I read the Statute.....resisting arrest, speeding at 135 mph on a public roadway, and the two Officers participating in the pursuit......if I were a Prosecutor I would take that case to Court.