I tried car camping for a few days, lol

I tried it twice in my business parking lot lol
Ah~ so good lol
I laid out a two-person
yoga mat I used to use for fishing
to get a feel for car camping.
lol lol
My current dilemma is
whether to buy an air mattress (the advantage is that the volume decreases when deflated)
or whether to buy a camping sleep mat that I've been eyeing since before my car even came out
(but it's bulky)
I am in deep thought.