Here is a set of 4 erasers in the shapes of cars.
Here is a toy for a small child to play with in the bathtub.
Here is a bar of soap. To encourage children to use the soap, A small toy car was hidden in the middle that the child got to play with when the soap was all used up.
Along the same lines, here is a tube of body wash which also had a toy car in it.
Finally, here is a set of 3 bars of soap shaped like cars. They were packaged in a box that resembled a car transporter. This version was issued in France.