Boston Police report arresting a Dorchester woman on charges she threatened another motorist with a knife last night at the McDonald's drive-thru on Warren Street:

The victim elaborated by telling officers that they were pulling into the drive-thru window of McDonald's when they were confronted by another car who also trying to get in the drive through window. The victims reported that an argument ensued and they ended up letting the other car go first. The victim, however, reported to officers that the operator of the other car was not satisfied with being allowed to get in front of them and continued by getting out of her car, brandishing a knife, and threatening victims by saying "We'll kill you, I'll slash your tires."

Earlier:
Coffee rage at a Dorchester Dunkin' Donuts.

Meanwhile, up in East Boston, police report a guy allegedly held up his former boss at knifepoint and made off with his car around 9 p.m. yesterday. Police say the suspect didn't get far - he allegedly smashed into another car at Border and Maverick streets. But when he tried to run away, two people grabbed him and held him for police. The driver of the other car was taken to the hospital with non-life-threatening injuries.

Cambridge Police report that when a man felt he'd been cut off on Cambridge Street last night, he caught up to the other motorist and beat him with a baseball bat he happened to have handy. No word on the condition of the other motorist.

Jimbo provides a couple of data points from East Boston.

Memo to Massholes in delivery trucks: You might not want to throw bananas at bicyclists when your company's name, phone number and Web site are all listed on the side of your vehicle. And, yes, we're looking at you, Boston Organ and Piano.

Hat tip to Brad Searles.

Iron Bowl, originally from Singapore, explains why he's in favor of keeping police in charge of directing traffic around street construction:

... Police details is what makes Massachusetts roads so safe. As many people know, there are a lot of MASSHOLES in Massachusetts, and having a police cruiser, and a police officer, definitely helps slow traffic, making it less dangerous for the workers.

In Singapore, I've seen untrained construction workers try to control traffic, Though the Singapore drivers are much more tamed, it is very likely to see drivers ignore these road workers and cause a massive traffic jam or accident.

Directing traffic is not as easy as it seems. Even in a bright orange vest, I personally have many close encounters with cars almost hitting me while I'm helping with traffic control at an accident scene. ...

So you want to know why DJDiva was doing 15-20 MPH in a 40-MPH stretch last night? The guy in front of her was neglecting his speedometer as he read the paper on his commute.

Jay G reports a similar phenomenon involving a "Suzy Soccermom" in a BMW SUV:

... I especially love how the cell phone glued to your ear caused you to significantly overreact to every single stimulus you encountered, resulting in comical mashing of your brakes every time a squirrel dashed out of a tree...

Stopping in the middle of the intersection, with no oncoming traffic, and waiting for the light to turn completely red before proceeding was a nice touch, too. ...

Alicia normally just accepts double parking as a way of life in not-so-gritty Southie. But the driver of a BMW SUV double parked outside the PS Gourmet Coffee on Dorchester Street, keeping people from turning right, really got her dander up:

... [T]here was a lady behind the wheel just chatting on her cell. In that situation, if you're waiting for a friend, why not unblock the right hand lane and pull about 20 feet forward onto East Broadway? It's just common courtesy, people!

UPDATE: Driver charged.

A box truck driver says he blacked out around 7:15 this morning, causing a multi-vehicle collision that ended in explosions and the shutdown of the intersection of Comm. Ave. and Brighton Ave. - and, of course, Green Line service through the area.

Channel 4 has video of a car fireball. Helicopter video. Ilovesashimi posts a couple of photos. Harry Mattison posts a couple as well. Channel 5 reports.

Meanwhile, an 18-wheeler hit the BU Bridge while on Storrow Drive but managed to get off the road without causing major damage, according to our friends at Traffic on the 3s.

Just remember: You are no match for a truck.

Many expressed relief that the sweetheart actress avoided injury in the ugly episode.