The younger Mr. Todashev was arrested in a 2010 road-rage incident in Boston.

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It looks, as always, rather agreeable except that there is a lot of traffic, which turns into the road-rage variety.

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In a recent road-rage incident in the Russian capital, two Chechen policemen bearing special security passes beat up and fired at a bus driver who cut in front of their Mercedes.

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And while Portland was included among the most frustrating cities in which to drive, Reuters cited its residents as being among the most road rage-free in the nation, followed by the (at least statistically) courteous drivers in Cleveland, Baltimore, Sacramento and Pittsburgh.

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It found that 58% of commuters have experienced road rage, and nearly one-in-ten commuters have gotten into a fight with another commuter.

FORBES: How Road Rage Endangers Your Commute -- And How To Prevent It In Yourself

Read: Fair game - Fast track to driver road rage?

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Also 45% said they experienced road rage, while only 22% of the non-gamers did.

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Back in June I wrote about electric car road rage after I found someone had unplugged the battery-powered Ford Focus I was charging at a public parking garage so they could juice their own electric car.

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Thirty-seven percent of workers with commutes of less than five minutes said they experience road rage from time to time, while 54% of those with commutes of less than ten minutes admitted to it.

FORBES: How Road Rage Endangers Your Commute -- And How To Prevent It In Yourself