Triple X, not sure why you would be ridiculed for this. I remember quite a few people tried those and few still use them. In fact, I had that same lens on my rear window as well for a while when I first bought my VX in 99 and it was VERY helpful. Then I took it off because I needed to tint the windows and forgot to put it back on. Then I think I lost it during my move and since I got used to just relying on the side mirrors I didn't get a new one. But it does help a ton, and it is a very good safety mod. Also, you can barely see that lens from the outside, especially if you have some tint - then it is pretty much unnoticeable.

Now I rely on my side mirrors so much that I don't even have the rear view mirror mounted It fell off on one very hot day last summer and I didn't bother putting it back on since it is useless except for the map lights. I think I am gonna use the remaining power connector to hardwire my V1.