With this logic, everyone should run out and buy something bigger. This would make our roads safer, right?
The problem with this type of logic is that they overlook the fact that "small" is relative.
For example, if everyone drove go carts, a samurai would be the biggest, therefore the "safest" thing on the road.
As giant SUVs become the norm in this country, all vehicles become relatively smaller. Cars that were "normal sized" 20 years ago have become tiny compared to a Ford Excursion or a H2.