Just thought I'd share this Joint Recall with Step2^® Company, Health Canada, and the United States Consumer Product Safety Commission (US CPSC. The hazard that has been identified is as follows:

The light blue plastic wheels can detach; these small parts pose a choking hazard to young children.

Neither Health Canada nor Step2^® has received any reports of incidents or injuries related to the use of these products.

You can view the CPSR site for more information on how to obtain free replacement train cars.