See also:

Automatic transaxle
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One Person Per Belt
Two people (including children) should never attempt to use a single seat belt. This could increase the severity of injuries in case of an accident. ...

Placing a passenger seat belt into the automatic locking mode
  The automatic locking mode will help prevent the normal movement of the child in the vehicle from causing the seat belt to loosen and compromise the child restraint system. To secure a chi ...