Pontiac 1998 Firebird Owner's Manual page 40

A
CAUTION:
L
Never hold a baby in your arms while riding in a
vehicle. A baby doesn't weigh much
--
until a
crash. During a crash a baby will become so
heavy you can't hold it. For example, in
a
crash
CAUTION: (Continued)
at only 25 mph (40 km/h),
a
12-1b. (5.5 kg) baby
will suddenly become a 2404b. (110 kg) force on
your
arms.
The baby would be almost impossible
to hold.
Secure the baby in an infant restraint.
I
I
1-33