Islands: Thank you for your interest too in Ms. Beasley's and Ms. Hawlett's cases; not to be premature at this time as to a definite response, but appears attempts to confirm/not may have been a police officer; there was a mentioning longtime ago about a officer calling into to police
station and reporting, "I don't know why I'm bothering you", the sergeant said, "but something about this feels funny." Being that late at night, on a dark roadway; visibility limited if only viewed by spotlighting from rolling by, dependent on direction traveling; if northbound, less likely to have felt heat of cooling down engine, to far away from seeing personal items in depth interior of vehicle; and drainages of blood thru trunk's floor exit hole had yet to sustain a constant flow, after high speed travel to scene causing extensive blow-by underneath/backwards towards rear bumper/area, enough afterwards allowing to be made an obvious accumulation upon the ground by later A.M. Hope this info helps with your having a better understanding.