Audio books for long car rides

Hi! I have a 5.5 year old daughter and we are about to take a 4 hour road trip. She's a huge bookworm and likes to listen to audiobooks in the car. We've only ever done really short ones on errands, but now that we're taking a longer trip I thought it ​might be a good opportunity to introduce some longer form stories.​

She is currently, physically reading The Magic Treehouse and would like to save that for her quiet reading time, but​ suggestions along those lines would be great! She loves adventure, medieval times, fairies, magic, and is currently obsessed with Jane Goodall and​ the rainforest, if that helps! Anything around 2-3ish hours would be ideal, as I think it would eat up most of the car ride to keep her busy. She likes to follow along​ with the actual book while she listens, so anything with pictures would be nice, too, to help her with visualizing. My mom is​ a librarian and I asked her, but all the books she's picked ​have been around 6 hours long, so finally I gave up asking her haha!