.. it depends. What if the point in the given situation is to avoid traffic congestion? You normally don't want (a small) buggy drive down a high speed highway.

.. it depends. What if the point in the given situation is to avoid traffic congestion? You normally don't want (a small) buggy drive down a high speed highway. In that case it the point would be: "should match the traffic flow requirements". So, I agree with your argument. It's all very situation dependent. For some reason I find it oddly comforting that human society and life in general can't be crammed into a small set of fixed rules. That would be kind of boring I think.