I'd like to shave mine clean off, have it hiding in the read window or something.
Check out a GoodGuys "magazine" (it's more like a huge mag full of ads.) The companies that cater to the Street Rod crowd have a bunch of innovative stuff that could be easily integrated into a late-model car. Hidden Antennas being one such product.
Wonder if there's an auto glass manufacturer that'll integrate an antenna into the rear defroster grid of an older vehicle (just like most of the GM's of the past 7-8 years have...)