Jayco has eventually lured Aussies to into 5vers

A Motorhome Company , Sunliner is also offering several variants on its a Global Pickup Truck towable 5ver.
This is their tiny 21ft, no slide model, the largest is a 26.5ft with several slideout options Quite a few smaller companies offer 5vers that are 30-36ft long, These smaller ones 21-27ft can be easily towed by the 3 litre diesel Asian sourced Pickups. Once the momentum builds hopefully more companies from the traditional Caravan market, will come onboard. They are wary at the moment