Cadillac 2008 DTS Owner's Manual page 25

Q:
What is wrong with this?
A:
The shoulder belt is worn under the arm.
It should be worn over the shoulder at all times.
CAUTION:
{
You can be seriously injured if you wear the
shoulder belt under your arm. In a crash,
your body would move too far forward, which
would increase the chance of head and neck
injury. Also, the belt would apply too much
force to the ribs, which are not as strong as
shoulder bones. You could also severely
injure internal organs like your liver or spleen.
The shoulder belt should go over the shoulder
and across the chest.
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