I blame it on being the eastern asia region, besides the stereo type that they cant drive worth a damn (which seems disturbingly accurate if you have ever been to hawaii.) there is also a bit where any time there needs to be a sudden death that doesnt make an antagonist, people use traffic.
Hell look at kurokami, which had the funniest thread title on SA: "beep beep, I'm a truck
", and also the most gore you've seen in any animated accident of a truck hitting a 9 year old girl going 80 in a residential zone.