The Wind in the Willows - Chapter 2, "The Open Road"

After some time of living with Rat, Mole has become incredibly interested in meeting the famed Mr. Toad. He asks Rat to bring him to Toad Hall - Toad's huge estate - and Rat agrees. They set off by boat.
He mentions that Toad had been previously obsessed with boating, but that that fad has now died.

When he sees them approach, Toad rushes out from Toad Hall, greeting them enthusiastically. Rat mentions Toad’s boating mania, but Toad scoffs at how juvenile boating was. He then ushers Rat and Mole to his newest toy: a yellow horse-drawn caravan. According to Toad, traveling the open road is the only way to truly live, and he believes this cart will allow him to explore the world.