Even if you're right about the "massive negative externalities," what makes you think the government's Absolutely Non-Paternalistic Meddling here gets it right?
Also, even Absolutely Non-Paternalistic Meddling can lead to other massive negative externalities by significantly increasing the cost of new cars (see my link above). Then consumers are less likely to purchase newer cars that, all else being equal, tend to be safer. So we have more deaths.
So, again, even if you're right about these "massive negative externalities," presumably meaning environmental effects, does that justify killing your fellow citizens by dooming the less affluent to drive older, less-safe cars?
