Seen on the Road

I drive in heavy traffc a lot in Houston mainly because there is a lot of heavy traffic in Houston.

In the past day or so I saw the following weird behavior:

• a woman driver eating noodles with chop sticks while driving at about 60 miles an hour while also yelling at a young man in the back seat who was holding a small dog out the  window.
• a couple on a motorcycle with the male driver fully kitted up in protective motorcylce duds but without a helmet while his female companion, wearing shorts, flip fops and a tank top hung on behind him with a helmet on her head.
• a car stopped partway into an intersection backed up a tad and bumped into another vehicle.  The driver of the vehicle that got bumped came roaring out his car, removed the keys from the first car's ignition and threw them into the bushes at the side of the road.

I'm sure there are reasonable explanations for each of these bizarre behaviors.

Any ideas?