No. The sling does not replace an approved carrying device adapted to the age and weight of the baby for transport in a car. The knots and the fabric are not adapted to offer an adequate restraint in case of deceleration. (Even for a short journey and even at very low speed, as the activation of the airbags and the tensioning of the seat belts represents a great danger).
So you need to switch from babywearing to car seats to protect baby. Here is a video to help you: