Comparing cause-of-death rates between automobiles and firearms is a lot like comparing the median number of miles traveled riding in a car versus carrying a gun.
Death is a possible unintended side effect of riding in an automobile. Death is the explicit primary purpose of discharging a gunpowder weapon.
Thus, this is far more laudable accomplishment for automotive safety than it is a deplorable statistic for gun owners. Cars now cause less deaths by accident than a consumer product that is actually designed to kill things when used correctly. Yay.
I don't ever have an absolute need to own or use a gun, but it is practically impossible to earn a profitable living without spending at least 40 minutes per day driving in my car, or riding in any other form of on-road transportation.
I don't particularly feel like the jerkass riding on the hard shoulder at 50 mph to bypass a rush-hour jam is in any way comparable to someone who plinks beer bottles--the ones they just emptied--off their back fence without stopping to consider if there are neighbors living in that general direction. They could even be the same guy. If so, I meet him far more often on the road.
Neither guns nor cars kill without an operator--not yet, anyway. If I am now less at risk from an idiot behind a wheel than an idiot with his finger on the trigger, that is unequivocally good news, because I encounter far more of the former. But the article doesn't exactly break the statistics down by intent. I suspect that rates of deaths by gun due to accident or operator negligence are still less than deaths by vehicle due to accident or operator negligence.
So I still feel like guns are safer for me than the average person, because I don't particularly feel like anyone has an actual desire to kill me specifically, especially given my own disinclination toward suicide.
The article doesn't tell me anything meaningful. It seems to be presenting the statistics in a very narrowly interpreted way to advance a particular editorial point of view. The Economist might as well tell me how likely I am to die from falling off a ladder while cleaning my gutters, and compare that to deaths by food poisoning, except that there are far fewer passionate advocates for pasteurization and ladder stabilization bars.