How does the accident in the end shows the reckless nature of 1920s America in The Great Gatsby?

I believe the scene in which Gatsby allows Daisy to
quickly drive, hit Myrtle, and then flee the scene demonstrates recklessness in several
ways.

1. Gatsby probably should not have let Daisy drive in
the first place. The uncomfortable parting with Tom in New York before they jumped in
the car likely had Daisy a little jittery to begin with, plus, being a rich woman, she
probably had little road experience. She was angry, and driving like she
was.

2. Myrtle only ran out to the car because she had been
locked up by Wilson as he had discovered she was having an affair. In her effort to
escape and be with Tom (because she thought Tom would be driving this car), Myrtle
rushed to the car without caution knowing he would only slow enough to pick her up.
Unfortunately this mistaken identity cost her life.

3. Any
responsible human being in their rational mind would have stopped the car to determine
how to help a situation like this. Gatsby encouraged her to stop, but Daisy was out of
it and Gatsby let her be and drove on. Gatsby was too swayed by Daisy to do the right
thing at the time.

Each of these reasons for recklessness
demonstrate selfishness on behalf of the character whose flaws contributed to the
reckless death.