Swedish brand Polar built a single unit of the Polar Glacier 'Black Beast' caravan in 2008, measuring 14 metres in length and featuring a sauna, dishwasher, ice maker and four berths. With a kerb weight of 3,400 kg and a maximum authorised mass of 3,500 kg, the payload is only 100 kg. The caravan does not comply with European road regulations (maximum trailer length in the Czech Republic is 12 metres) and has had a driving ban in Sweden since December 2025. The original price was around €125,000, but at auctions in October 2025 the highest bid reached SEK 294,000 (approx. CZK 650,000) and in May 2026 SEK 83,000, without meeting the seller's reserve price.
