An arrogant,
inconsiderate, or dangerous driver, particularly the kind who ignores or harasses cyclists &
pedestrians (a merging of gas & asshole). Basically someone who has an inflated ego because they have a car and you don't. Not reserved for any one gender
(In extreme cases, may even be hostile &
disrespectful to people who don't have their particular kind of motor vehicle: bus drivers, cab drivers, pick-up truck people, etc. In this case, the expression may be modified to "bushole," "truckhole," or "cabhole," as appropriate.)