I would do the drive then
I look back and wonder ‘what was I thinking!?!?!’ but I took Rupert and Kahlua to Vancouver (12 hour drive plus stops) and back to adopt Chuck. They did JUST FINE. I opened my trunk up by folding down a seat (my mom killed me for bunny pee on her suitcase) but they made a fort in the trunk. They were timid for maybe an hour and then went about business. I did critical care/apple juice every three hours (just in case) and had veggies and a water bottle available the whole time (plus pellets and hay).
They did fine. I had so many people come up at rest stops to meet them. I ruined a hotel room with hay (whyyyyy ddn’t I bring my little vaccum???). It was great, they met in neutral territory, and had a car ride to associate with the new bunny, and we had people who heard us through the walls and wanted to meet the bunnies (in the ‘no pets’ hotel…)…that maid probaly wondered why there was hay in a hotel room the next day…
But at any rate dead of summer across BC travel and they were fine. WE blocked out windows with pillow cases and stopped lots and had everything available to them. But they adjust to it, and acted no different then at home…peeing on my moms suitcase and making forts
And if your worried about long distance, my vet went to school at the vet school |(only one) six hours away, she came home (here) every weekend with her guinea pig and dog…on the seat next to her. So yes-animals travel well-especially in cars
So my advice-take him with you 