It sounds you are making the Boxster into a veal cutlet. I don't see the need to get a P-car and not to use it. I use mine everyday top down as much as I can. Luckily I have only 15 minute commute or shorter depending on my speed mood. I use my car all year round. I love it and I would be nuts to put in the garage so I could save it from use! Dump the TT, which sucks anyway, and drive the Boxster which is the standard for all sports cars. Get rid of your guilt and drive the car that truly rewards your driving experience!