Our rig is a 2008 Sunliner on a Fiat ducato which we've now done 39,000km in. It is fitted out with solar panels, inverter, washing machine, double bike rack, 12V fans - so we're all set up for free camping. It can carry 250L water, 50L grey water and we tow a little Suzuki swift behind it on a hitch-and-go A-frame.