road hog

from WordNet (r) 3.0 (2006)

road hog
    n 1: a driver who obstructs others [syn: {road hog}, {roadhog}]

from Moby Thesaurus II by Grady Ward, 1.0

39 Moby Thesaurus words for "road hog":
      Sunday driver, backseat driver, bus driver, busman, cabby,
      cabdriver, careerist, chauffeur, driver, egotist, fortune hunter,
      hack, hackdriver, hackman, hacky, hit-and-run driver, hog,
      individualist, jitney driver, joyrider, lone wolf, loner,
      monopolist, motorist, narcissist, self-advancer, self-pleaser,
      self-seeker, self-server, speeder, taxidriver, teamster,
      temporizer, timepleaser, timeserver, truck driver, trucker,
      truckman, tufthunter