Good idea with the seatbelt mechanism!
satlars wrote:can upload pictures of how I made them if someone explain me how to do it.
And how to easy upload a picture, you can either click on "Upload attachment" below the textfield where you type the message, or register at http://imageshack.us/
With imageshack you can easy get the code to paste directly here, just upload an image, and find where it says "Thumbnail Size" and then select "Forums:" which is a bit below.
By copying that line, and pasting it in here, it will look like this: