Smeed's law
en.wikipedia.org
en.wikipedia.org
If this is true, then this formula should appear outside the world of driving. Has it been applied anywhere else? I did a quick search and found nothing.
I wonder if it applies to flying, rail travel, employment related fatalities, medical related fatalities, etc...
The existence of the alternative affected one's perception of the "slowness", just as being stuck in traffic in LA made me wish for a proper subway system.
No quantification, just anecdotal observations.