It sounds like you're asking about an inflatable product related to cars and walking. There are a few possibilities for what you could mean:

1. Car Inflatable Walking Costumes: These are inflatable costumes that people wear to look like they are driving a car or walking with a car as part of a costume. The "inflatable" part usually refers to a costume that's blown up to give it shape, often with a fan inside to keep it inflated. These costumes are popular for events like Halloween or parties.