I think I have one in the garage, it's green ...... erected it once with my friend and once up there was a lot of space ..... the height was good but we never attached it to her car as we were only playing in the garden to see how it all went and attempted to pull the rear tunnel up with the help of her disused garage doors! The tunnel may need a adjustment to make it work but the actual frame work/tent is a good height and there was bags of room inside. I think if you wanted it on your Dandy you may have to adjust it to make it fit but if it's like the one we have and I'm sure it is then you get a tub style groundsheet already fitted. It's been about 3 years since we played in Doris's garden with the one I have so please check properly, perhaps your friend would let you erect it to see. I'd forgotten we have one in the garage
We really are going to have to sort out in there!