Hey Rudra,
Interesting observations.
Ofcourse they are generalized. (ive seen cabbies with road manners as good as say..optra owners
)
I totally agree about your theory of what u call "reverse logic". So many times i have seen people abuse some1 ahead of them for pulling off a move on them that they just pulled off on some1 else 1minute back.
The only way to improve the situation is to start with yourself. Then maybe when you think you are perfect enough start explaining to your drivers and friends the importance of civil road manners.
cya
R