What do we say when someone steal a car with hostage in it?

Ohh !! Thank you :)

Just to be clear, all kidnapping is a felony. Most all states have varying felony levels depending on how it is done. The difference the state line makes is that it becomes a Federal crime under the Lindbergh Law at the state line unless the abductor is the parent of an abducted child. Under the Uniform Child Custody Act, when a parent crosses the state line in violation of a court ordered custody agreement, they commit a felony under the state law where the court order exists but it's not prosecuted under Lindbergh.

Thanks, Rob, for the clarification.