the.com/road hog

means A driver who selfishly hogs more than their share of the road, refusing to yield or stay in lane.

from A straightforward 19th-century compound: 'hog' had long been used as a slur for someone greedy or selfish — a creature that takes more than its share at the trough — and once bicycles and then cars arrived, that greed got attached to the road itself. The term 'road hog' was in print by the 1890s, originally aimed at inconsiderate cyclists before shifting, with perfect ease, onto the next generation of selfish drivers.