Maybe you happen to be on a route that runs well from home to work without lots of stops and no need to change lines. Can you find a destination in your city that would require a change of bus or train and incur a larger time penalty? What if your job was located there instead?
I think most people buy sensible vehicles but there are certainly people who have a truck fetish that is not justified. Unfortunately it creates an arms race where all cars get larger because there are very real risks of a collision with a larger vehicle.
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