Walt was a little disappointed to find out that there wasn't much celebration with the Justice League but he guessed that was what happened with adults. When Wonder Woman introduced herself, Walt smile and replied, "My full name is Walter Chuck Warner, but you can call me Walt when we are not on duty. Is it true that you have an invisible jet?" 

He was curious to know since he had heard people talk about it and this made Walt curious since Wonder Woman could fly and didn't see why she would need a vehicle to travel. It also sounded funny