Well, proper infrastructure definitely makes car "accidents" much less likely. Also deaths should not be the only statistic here, much more people get disabled by cars than killed

If it is really rare water with a unique mineral composition, why not?

Cant speak for the US, but in general, Covid is still more dangerous during the acute infection than the flu and also causes much larger numbers of post-viral sequelae. Those are all potential reasons to recommend the vaccine, which can reduce the severity of both