Now, with the inflatable rear seat extension that is no longer a problem. My dog and I love it. I drive a Golf 4, inflated to attention the garment fits perfectly indeed behind the seats, but you can not then the front seats set fully rearward. It helps, however, if you desist some air. Then you can push the seats backwards and thereby the extension is easily bruised, it is tight again. You know what I mean.
The quality of the extension is great. The material is nice and thick and leaves a high quality impression. There are three air chambers that are inflated individually and which are fixed to each other (as shown in the picture content). The pump is a little loud / strident, but it performs its service very good. After a few minutes everything was fully inflated. The cable or the plug will fit wonderfully into the cigarette lighter and works without problems. The extension has air intakes as with an air mattress / floating rings and so on. These also have this protection that the air can not get out so easily. To drain you should use the adapter tip of the air pump, is then very quick.
I have the extension now they taken out yesterday for a month permanently in the car and had to suck topsy times. She has meanwhile lost no air! Top! Strong buy recommendation on my part.