In reply to kevin stephens:
Standard advice is:
Get a tent for car camping.
Either get something palatial or something cheap and cheerful.
Preferable get something you can stand up in. This does wonders for your basic liveability.
Look at Tesco, Argos, Go Outdoors, Sainsbury, Decathlon...
You can get a small tent for car camping for under £20, and it will do the job just fine.
PLUS
Get another more specialist tent for the more specialist uses.
This way your precious and expensive tent doesn't get trashed.
And you don't find yourselves all squished whilst car camping.