Moira says, "We were going through the wildflower garden at the Mann House and I saw this. It's Percy Mann's car. He lived at that house and he got mad at the town about money fees so he drove his car into the back yard and never drove it again. It sat there so long it rusted and a tree grew up out of it. It's a very, very, very old car."
Here's a link to the Historical Society's explanation of Percy Mann's car. Moira didn't like seeing it near the beautiful flowers, but it's a pretty funny story.