I haven't seen this type of study previously. This report and study and the date of release should be noted, if proven this could be extraordinarily significant. Toxic air pollution particles found in human brains It could even open the way for Asbestos type litigation. It would be possible to argue from the date of this report onward that the ICE automotive industry had been put on notice of a probable causal link. Especially this supports outright BEVs and not PHEVs BEVs have their pollution in the manufacturing process for sure, but at least this is containable if manged sensibly, and hugely preferable to ICE type pollution in the city and highway environments.