▁ 1   kg ▁of ▁wood ▁for ▁every ▁km . ▁ ▁The ▁post - war ▁period ▁was ▁one ▁of ▁bo om ▁for ▁Johann sen ▁who ▁was ▁able ▁to ▁purchase ▁many ▁tr uck s ▁and ▁other ▁mechanical ▁items ▁from ▁army ▁dispos al ▁sales ▁and ▁with ▁these ▁vehicles ▁was ▁able ▁to ▁construct ▁the ▁world ' s ▁first ▁road ▁train , ▁with ▁three ▁self ▁tracking ▁tra ilers , ▁using ▁a ▁Diam ond ▁T 9 8 0 ▁tr uck . ▁These ▁tr uck s ▁were ▁then ▁used ▁for ▁all ▁kinds ▁of ▁fre ight ▁but ▁were ▁especially ▁useful ▁for ▁cattle ▁transport ▁which ▁changed ▁the ▁way ▁far ming ▁was ▁done ▁as ▁tr uck ▁transport ▁was ▁better ▁for ▁stock ▁then ▁dro ving ▁and ▁the ▁cattle ▁arrived ▁in ▁the ▁yards ▁in ▁better ▁condition ▁and ▁therefore ▁fetch ed ▁higher ▁prices ; ▁this ▁also ▁meant ▁that ▁younger ▁cattle ▁could ▁be ▁sold . ▁ ▁Later ▁life ▁▁ ▁Johann sen ▁retired ▁from ▁min ing ▁and ▁transport ing ▁in ▁ 1 9 8 0 ▁and ▁purchased ▁a ▁small ▁h ob by ▁farm ▁in ▁Y ank al illa , ▁South ▁Australia . ▁In ▁ 1 9 9 2 ▁he ▁published ▁his ▁aut obi ography : ▁" A ▁son ▁of ▁' the ▁red ▁centre ': ▁mem oir s ▁and ▁an ec d otes ▁of ▁the ▁life ▁of ▁a ▁road ▁train ▁pione er ▁and ▁bush ▁invent or ▁of ▁the ▁Northern ▁Territ ory ▁of ▁Australia ". ▁ ▁Johann sen ▁was ▁induct ed ▁into ▁the ▁Sh ell ▁R im ula ▁Wall ▁of ▁Fame ▁in ▁ 2 0 0 0 . ▁He