or ramble through the mud on a rotavator or a topless Mini Cooper through Norwegian fjords
Geirangerfjord

CC BY-SA 2.0 DE · Jörg Hempel · Wikimedia Commons · licence
The motoblok
The sentence assumes you can travel on a rotavator, and in English that reads as absurdism. It isn’t — it just needs one missing part.
A мотоблок is an engine and a gearbox on two wheels, steered by handlebars, with the operator walking behind. Implements attach for ploughing, harrowing, lifting potatoes, clearing snow. And in every manufacturer’s catalogue there is a trailer with a seat.
With the trailer on, the operator stops walking and sits down, and the thing becomes transport: slow, open to the weather, entirely serious as a way of getting somewhere with a load.
The Mini Cooper in the same line is topless. So is this.

CC BY-SA 4.0 · Вадзім Медзяноўскі · Wikimedia Commons · licence
The seated trailer, from the people who make them
Third in the book’s fleet, after the Opel Kapitän and the bukhanka.