Coroner rules no foul play in the disappearance of Jayden Penno-Tompsett
The 22-year-old mysteriously disappeared while on a drug-fuelled road trip
He was travelling with a friend from Newcastle to Queensland at the end of 2017
His family fear he was murdered but an inquest ruled he perished in the heat
Locals have called the stretch of road where he disappeared 'highway of death'