For $25, it's the best I've found. There are things you can do easily I'm sure to make it how you want
If you want just a case for your car, check this Vanguard Swing 8 case.
http://www.amazon.com/Vanguard-Swing...4656558&sr=8-5
It's 6 3/4" W x 4 1/4" H x 2" D . You mentioned earlier you want something the size of a book. The lower portion has the pluck foam. The upper part of the case as some sleeves to hold head phones and such.
I'm going to order one and see if it will work or not. I've seen them anywhere from $8-$20 on various websites.