Man Builds a 300-Euro Mini-Caravan to Tow Behind His Electric Bike

What makes Marco's caravan stand out is not just its low price but also how he minimized both cost and weight. Instead of wood or aluminum, he built the body from XPS panels—a rigid foam insulation commonly used in construction. This material is light, strong, waterproof, and excellent at retaining heat. For under 100 euros, he had enough to create the entire shell of the mini-camper.