"Trucks and SUVs today are also significantly heavier than they used to be, with the average truck ballooning 34% in weight since 1990. That’s especially bad news for any pedestrians, motorcyclists or cyclists they hit. They’re also vastly more popular, accounting at multiple points in recent years for 80% of new car sales in the US, according to JD Power data cited in a comprehensive look at ever-larger vehicles in Slate."