I tend to group bad foreign drivers into two categories being Fung and Hadji as follows:
1) Hadji is the Indian guy who has his whole family in the car and just cruises about five miles/hour below the speed limit, while primarily being in the fast passing lane. He also tends to drive in two lanes at one time, 2/3 in the fast passing lane and 1/3 in the lane to the right.
2) Fung is the oriental chap who tends to change lanes without the usage of turn signals and more importantly without looking.
