What do you attached the dog too you may ask? well rather than tie him too one of those large corkscrew type things that pet shops sell (which only work in grass) attach a couple of stainless steel or galvanised d’ring/eyelet’s to your van, that way it’s a doddle to clip him on as soon as you open the door. We have four at various points around the van, none are visible so don’t look funny.
Those same d’ring/eyelets are also a great way to clip any doors open, motorhomes and caravans usually have a door clip to keep them open, sadly they’re useless in windy conditions. Just attached a length of thin rope to the inside of the door and then clip the door open on the eyelet, no more trapped fingers or legs when the door slams closed.
The same type of d’ring/eyelets also hold our washing line that surrounds our dash.