@RoyN: any screenshots and install pics yet?
i recently bought a 2001 chevy tahoe here in switzerland and parking it sideways in a small parking lot in zürich really can be a pain in the a... so i plan on getting a rear view camera to see the whole bumper. because the rear window bends forward, i can't attach it to the top of the rear door, so i need to have a camera with a high view angle to be able to see the whole bumper from about below the rear window.
btw: i saw a cool and very very small camera (it was about 1/2" long) at this year's CeBit (computer exhibition in germany). it has something around 150° Viewing angle i'd guess (i only could try to find it out by moving my hands, so it might be less or more, but it's a lot

) and the picture quality is probably enought to use it as a rear view (i saw it in action).
the problem is, i don't know where to get them. as always, those taiwanese exhibitors only sell in quantities of 100+ items

... well i think allthough a tahoe is one of the bigger cars in switzerland, it isn't so big that i needed 100 cams around it
anyway.. here's a picture of the camera.. if any of you saw it somwhere, let me know!
cheers
pascal
PS: i don't really need a keyhole camera, since there is no keyhole