Lighter, more fuel-efficient cars are safer, study says, ignoring safety rules

2017 Hyundai Elantra IIHS crash testIt was one of several common tropes used 10 years ago against proposed regulations to boost average fuel economy. "More efficient cars will have to be lighter-weight, and they'll be unsafe because in accidents, they'll crumple up like Kleenex." Logical conclusion: if you require higher fuel economy in cars, more people will die in crashes. DON'T...