Never hold your baby in your arms or on your lap while riding in the car. Even in a minor crash the baby can be killed.
Consider what could happen in a frontal crash at 50 km/h to:
a) an adult who is not wearing a seatbelt and is holding a child.
b) an adult who is wearing a seatbelt and holding a 10-pound child.
Remember, it's the law in B.C. that infants, children and adults ride restrained (in restraint systems - car seats - certified to CMVSS) in motor vehicles.