Technology

The U.S. death rate is about 750 / 100,000 overall, with about 14.1 of those 750 declared suicide (you can never really know, but the suspected actual suicide rate is a bit higher, to preserve insurance benefits...)

The current US death rate by automobile accident is around 13.4 per 100,000 - so, by those statistics, people are already slightly more likely to take their own lives by choice than they are to die in an auto accident.

Of course if you choose to walk, you're not entirely safe, the US pedestrian death rate is around 2 per 100,000, and that's with most people driving everywhere most of the time.

Another fun way to look at the end is lifetime odds:

Death by suicide: 1/87 Death by automobile accident: 1/93 (which seems to indicate in itself that deaths by auto accident are expected to decline, or perhaps have recently increased slightly?) Death by firearm (US): 1/91 Suicide by firearm (US): 1/156

Next time you're driving on a 2 lane highway at speed, oncoming cars approaching at a relative velocity of 100mph and more (50 in your direction 50 in theirs...) count oncoming cars. When you get to 87, odds are that one of those drivers will ultimately die by suicide... there's a little solace in the fact that most of them won't be doing it by swerving into oncoming traffic, and the bigger relief is that most of those that do, won't be doing it at that particular moment just before you pass.

As for guns - that's a whole different mess, but interesting that the numbers are so close.