Inconsiderate driver (4,3)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">inconsiderate driver</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for road hog that I've seen before include "Selfishly aggressive driver" , "Boorishly reckless driver" , "Driver who obstructs others" , "Driving pig?" , "Mr Toad, for one" .)
(Another definition for roadhog that I've seen is " Reckless driver".)