▁they ▁started . ▁Fall ing ▁off ▁the ▁rails ▁and ▁getting ▁stuck ▁will ▁lead ▁to ▁an ▁instant ▁fail . ▁Karl ene ▁is ▁first ▁up ▁and ▁sets ▁the ▁bar ▁very ▁low , ▁man aging ▁to ▁fall ▁off ▁before ▁even ▁getting ▁a ▁full ▁length ▁of ▁the ▁mini ▁SU V ▁onto ▁the ▁rails . ▁D arr is ▁passes ▁with ▁ease , ▁further ▁convin cing ▁Andrew ▁that ▁driving ▁was ▁never ▁the ▁issue ▁with ▁D arr is . ▁Alex is ▁and ▁Des cy ▁don ' t ▁have ▁much ▁trouble ▁getting ▁across ▁going ▁for wards , ▁but ▁neither ▁adjust s ▁their ▁wing - mir ror s ▁for ▁revers ing ▁and ▁both ▁fail . ▁Brit t any ' s ▁run ▁is ▁pract ically ▁a ▁copy ▁of ▁both ▁Alex is ' ▁and ▁Des cy ara ' s , ▁but ▁despite ▁being ▁forced ▁to ▁take ▁the ▁challenge ▁with ▁Andrew ▁as ▁her ▁passenger , ▁she ▁gets ▁across ▁going ▁forward ▁fine , ▁but ▁ref uses ▁to ▁try ▁revers ing . ▁Br andon , ▁who ▁is ▁once ▁again ▁forced ▁to ▁drive ▁with ▁a ▁sp inner ▁kn ob ▁due ▁to ▁his ▁broken ▁arm , ▁also ▁gets ▁across ▁going ▁forward ▁fine ▁in ▁pract ically ▁a ▁copy ▁of ▁Alex is ', ▁Des cy ara ' s ▁and ▁Brit t any ' s ▁runs , ▁but ▁is ▁only ▁able ▁to ▁make ▁it ▁about ▁half way ▁across ▁in ▁reverse ▁before ▁falling ▁off . ▁ ▁Head - to - Head ▁Re vers ing : ▁This ▁challenge , ▁being ▁run ▁in ▁its ▁Canada ' s ▁Wor st ▁Driver ▁ 1 2 ▁inc arn