There is a time and place for nearly everything. I like a nicely tuned, powered-sub as much as anybody, especially live sound at a concert. I also really like Boxsters. I just don't care for subs in Boxsters. So many design compromises have to be made to get a good one in the car that most just sound like poo and take up a lot of space. A lot of great music happens above 60hz but when I need uncompromising, full range audio quality in the Boxster I always start by greatly reducing the noise floor with a pair of these.
http://www.amazon.com/dp/B00GB1M49M/?tag=headphunboxe-20
Wrong place, wrong time IMO. Others will surely disagree.