1. Get a clear cd case as shown: http://www.alibaba.com/sitemap/archives/images/qu50055212bo_Single_Disc_CD_Case_with_Transparent_ Trays_and_Covers.jpg

2. Only use the cover part. Dont use the back.

3. Cover both sides of the cover with masking tape. There's less cracking of plastic when you tape it.
http://candles.genwax.com/candle_mainimage_vendor/P0615494.jpg

4. Cut a piece that fits for your car. THis works for all scale cars: 1/18, 1/12, 1/24.

5. The plastic is going to be jagged everytime. So you're GOING TO HAVE TO use a file and file it until it's the shape that you like.
http://www.orbitals.com/self/survey/chain/big/file.jpg

6. When you're done, cut a square piece of masking tape and tape the screen and paint the BORDER of the tv. Then for the SCREEN of the tv, use masking tape and cover the border. Then you can either use black paint or nail polish to make the screen black. Unless you want a picture there, just go online and print out a picture. Then you can take it to a copy machine and reduce the size till it fits.

7. You're Done!

not a bad idea, i definately will try this on some of my upcmioing projects