Just hazarding a guess here but.....
"Cane Toad river" = creek infested with large non-native anphibians
No creek, just Cane Toads all across the road in pouring rain, for 400 yards (in the old money!)"crossing the road" = shallow creek crossing enabling vehicular access to opposite bank
I was honking along and came around a long sweeper and ploughed into this seething mass of amphibians!!! No brakes, just tried to pad across them to slow down....but round and around she went....thankfully not another soul around."up near the Sugar Refinery" = a general bearing indicator relative to the nearest inhabitants
Hmmmm, on the left hand side of the road, by a river, low lying area, up between Grafton and McLean used have Cane Trains beside the road and a big Sugar Factory "the Mini stunk to high heaven" = cross the creek, strike numerous non-native amphibians, compress amphibian carcases under trusty 10" mags,
Sadly no mags, just 5" widies with Michelin XZXs (hmmmm...me like)squish contents of anphibian carcases into the wheel arches and running gear, sample the aroma.
Yuk!! I can still smell em!! 
"two consecutive 360s" = re-cross creek, then go over and back one more time for the fun of it.
Nope....proceeding in slight curve, phhtt, phhhtt and end up on the side of the road surrounded by amphibians!! 
"by the time I got to Brisbane" = Allow anphibian guts to ferment in the sun for several hours to highlight the aroma.
Ohhhh yeah, cleared all the rain and the little buggers started baking on underneath 
