Many motorists would prefer to drive alone than carry passengers that drive them around the bend, research reveals.
Back-seat drivers, know-it-alls, road-ragers, fidgeters, drones and snorers are making drivers' blood boil as they negotiate the road, and some would prefer the isolation of a lonely journey rather than suffer their passengers.
The research, by Continental Tyres, discovered that the average driver gets annoyed at least three times by their passengers' behaviour during the typical journey.
It also found it took just six minutes of the passenger's irritating behaviour for the driver's temper to flare.
At times, patience has been stretched to such an extent that as many as one in five drivers has asked a passenger to get out of the car.
The back-seat driver is the most unpopular passenger in the eyes of the driver, and is blamed by 25pc of them for ruining car trips.
PANIC Unable to keep hands, feet or thoughts to themselves, their main characteristics are: "braking hard" before every junction, thumping the dashboard in panic (not from the back seat), and commenting on every turn.
Of the 4,000 opinions studied by the researchers, one in 10 fell into the "fiddler" category -- those who are bored and "twiddle with buttons and air con and switch radio stations".
Drunken friends, partners and mothers were also named as being among the worst with whom to share a journey.
Other dreaded journey companions include: