- X , ▁also ▁known ▁as ▁the ▁" B ul let ", ▁was ▁the ▁first ▁Tri umph ▁car ▁to ▁use ▁the ▁TR ▁design ation . ▁ ▁It ▁was ▁first ▁shown ▁to ▁the ▁public ▁at ▁the ▁Paris ▁Auto ▁Show ▁in ▁late ▁ 1 9 5 0 . ▁En vision ed ▁as ▁a ▁personal ▁lux ury ▁car , ▁it ▁had ▁en velope ▁sty ling ▁with ▁al umin ium ▁body ▁pan els , ▁sp ats ▁over ▁the ▁rear ▁whe els , ▁electro - h yd ra ul ically ▁operated ▁seats , ▁windows , ▁and ▁top , ▁on board ▁hyd ra ul ic ▁j acks , ▁elect r ically - oper ated ▁hidden ▁head light s , ▁and ▁a ▁power ▁radio ▁aer ial . ▁The ▁TR - X ▁used ▁the ▁Standard ▁V angu ard ' s ▁frame ▁and ▁engine , ▁the ▁Tri umph ▁Ren own ' s ▁susp ension , ▁L ay cock ▁de ▁Norman ville ▁elect r ically ▁operated ▁over drive , ▁and ▁a ▁ 9 4   inch ▁wheel base . ▁The ▁top ▁speed ▁was ▁estimated ▁as ▁▁ ▁The ▁TR - X ▁was ▁dis cont in ued ▁after ▁three ▁pro tot ypes ▁had ▁been ▁built . ▁Some ▁of ▁the ▁electro - h yd ra ul ic ▁systems ▁broke ▁down ▁during ▁a ▁demonstr ation ▁of ▁a ▁TR - X ▁to ▁Princess ▁Margaret , ▁Count ess ▁of ▁Snow don . ▁Standard ▁could ▁not ▁develop ▁and ▁manufact ure ▁a ▁car ▁that ▁complicated ▁and ▁still ▁sell ▁it ▁at ▁a ▁profit . ▁The ▁car ▁would ▁also ▁not ▁have ▁been ▁compet