After a recent cock up when I washed the van without checking the window was closed I ended up with a rather wet drivers seat. With hook up not available to use a fan heater or hair drier, and not wanting to leave the truma heating on, and not wanting the seat to remainwet in the present cold weather I was stumped ! Then her indoors suggested a hot water bottle. Wrapped in a tea towel and left on the seat, the upholstery was dry before the bottle was cold ! Magic! voxy.