I personally want to get one. You can get far more advanced kits then just the front of the car. You can get rocker panel covers, rear quarter panel covers, etc. For example I've attached 3 images that show one of the almost full Elise car kit. They can get really advanced.
I think I'll email them and see if they have plans to make one for the Solstice or not.
Here's a great site that sells made car kits. This is their list of makers they support, and then inside of each one is the list of cars they make specific kits for. They seem to make some nice kits for a lot ofGM cars.
http://www.stickercity.com/store/home.php?cat=427