So you are saying the increased frequency of monsoonal rains and their ferocity, the cause of many deaths could be attributed to overpopulation. That is an interesting theory so perhaps you could expand on your hypothesis further.
Nothing wrong with a pick-up. They were designed to be a utilitarian commercial vehicle . They were not designed to be driven at break neck speeds by drunk morons who lack even basic road sense, the most of which in Thailand happen to be males.