You are giving an argument as to why coronavirus is more threatening to society at large than crashes. That is not relevant to the discussion at hand, which is about whether or not allowing road travel means being complicit in deaths.

Your argument is that, yes, road travel means we choose more deaths (thus implicitly validating the argument you're trying to critique), but that because the deaths don't spread exponentially, this is okay. That is a fine viewpoint, but it relies on the premise you're trying to disprove (that we are in fact okay choosing more death in order to facilitate unnecessary human interaction).

And frankly, Thatcher has nothing to do with this, so you should probably stop bringing her up.