Thought I'd revisit this thread to add a little more info for those who had asked/opined about the tilt angle. The Chrysler Sebring seats I had mentioned only tilt about 30º off of vertical. Probably too cramped for most users, but I still like the idea of integrated shoulder seat belts. The graphics overlay is a transparent "Screen Protractor" that I happen to run across on the 'net. Makes it handy to find angles in a picture. Very easy to use. After downloading and running, place a shortcut for it on your desktop; preferably off to a far side. Open up an image as large as possible while still being able to click on the Screen Protractor icon. The Protractor shows up on top of the image. You can move its zero point around to the pivot point in the picture and then align the red axis lines to measure. The program can capture and save as a PNG, but you can change that to a JPG with a photo editor. Best part....it's free. https://sourceforge.net/projects/osprotractor/ Here's another that may have more features, but it costs $29.50 http://www.iconico.com/protractor/