Photos of the damage caused by a catastrophic fire on the 6,210-ceu car carrier Fremantle Highway (built 2013) have reignited a debate over the possible cause of the blaze.

A grainy photo has emerged of the charred remains of the $100m cargo of what appears to be melted high-value German cars.

It is being suggested by some experts that the blackened remains include a row of Porshe Taycan electric sports cars.