Answer:
This sentence is correct as is.
Step-by-step explanation:
When doing exercises that include commas, its best to actually say it out loud or in your head, pausing at moments that make sense to pause at.
In this case, we would pause and add commas after the list of transportation that this boy has never been on.
Never add commas when the list has only 2 items on it, only 3 or more.
Hope this helps! :)