Try checking your motor mounts. A loose motor mount may explain this.
Yes.
Ask this question again specifying what the car is.
A car may buck at a red light because it is in need of a tune up. The issue could be the fuel pump is not functioning properly, a clogged air filter of fuel filter, or even bad fuel. There may also be a bad spark plug or two, which is more noticeable at low speeds and idle than while driving.
sleeps ;)
loud, and shety muffler
Don't look, I'm changing!
Depends of the year? Usually what differs a muscle car and a sports car(other than yr.) is handling. A Muscle car in the day was stop light to stop light, a sports car is more about handling back then.
could be transmission
No, when anything is slowing down it is decelerating.
It is idling. This is hard for an engine to do smoothly.
Could be time for a tune up.
The car that reached the stop first. Then the second car that reached the stop. Taking turns as they arrive. Same way at a four way stop.