▁inter ference , ▁but ▁it ▁is ▁hard ▁to ▁build ▁a ▁stable ▁vehicle ▁using ▁only ▁rear - w heel ▁ste ering . ▁ ▁The ▁Vel ay o ▁uses ▁a ▁tr icy cle ▁configuration ▁and ▁ste ers ▁only ▁the ▁rear ▁wheel ; ▁but ▁it ▁is ▁produced ▁only ▁in ▁small ▁numbers . ▁The ▁experimental ▁Kings bury ▁Fort una ▁and ▁Qu attro ▁vel om ob iles ▁ste ered ▁all ▁whe els ; ▁this ▁approach ▁avoid s ▁some ▁of ▁the ▁stability ▁problems ▁of ▁rear - w heel ▁ste ering ▁while ▁still ▁reducing ▁the ▁ste ering ▁angle ▁of ▁the ▁front ▁whe els . ▁ ▁However , ▁this ▁approach ▁has ▁not ▁( as ▁of ▁ 2 0 1 7 ) ▁gained ▁wider ▁use ▁in ▁vel om ob iles . ▁ ▁A ▁vel om obile ' s ▁fair ing ▁shield s ▁the ▁driv et rain ▁from ▁weather , ▁as ▁well ▁as ▁the ▁r ider . ▁ ▁D riv et rain ▁maintenance ▁is ▁often ▁reduced ▁compared ▁to ▁other ▁cycles , ▁especially ▁un fa ired ▁b icy cles , ▁where ▁the ▁front ▁wheel ▁k icks ▁up ▁g rit - cont aining ▁dust , ▁mud , ▁and ▁dirty ▁water ▁that ▁lands ▁directly ▁on ▁the ▁chain ▁and ▁increases ▁the ▁rate ▁of ▁ab ras ive ▁wear ▁on ▁the ▁driv et rain — including ▁chain ▁and ▁s pro ckets , ▁but ▁sometimes ▁also ▁der aille urs . ▁ ▁The ▁fair ing ▁of ▁a ▁vel om obile ▁tends ▁to ▁limit ▁both ▁the ▁amount ▁and ▁the ▁kinds ▁of ▁g rit ▁landing ▁on ▁the ▁driv et rain . ▁ ▁Some