I invite you to re-read my comment. I don’t see how it could have been more explicit:
[You] the yearly road trip vacation with the extended family
[Me]For a once a year event, renting is almost certainly cheaper than using a larger vehicle you don’t need for the rest of the year.
As for the rest, I will be happy to maintain a friendly conversation only as long as you return the favor. I will not get involved in angry internet arguments.