I like the rat look on certain cars, but like anything else, there are those that can do it and those that make a tit job of it.
For me a rat look is a look that has come about over time, bit by bit parts rusted, fell off, got botched got added. Something interesting with lots of little features.
Some of the old beetles look cool and look like they have been lived in and have never had a penny spent on them or a car in the world given to their astetcis, just made to keep on rolling.
Not really a fan of those that stick an unpainted rusting bonnet on a modern car to be honest.