There is nothing cool about a Boxster with a roof rack.

Either it goes inside, or you take your other car.

I disagree.

Boxster bike rack very cool, shows a lack of compromise and sense of adventure, that your car isn't just a posing tool. I usually stick the bikes on the Corrado (roof mounted rack), even though I own 2 vastly bigger more practical bike carrying vehicles. When I go camping the Corrado also invariably gets taken. Great to be able to take the rack off at the other end and still have a compact performance car for diving around in..

What's it attached to underneath?

That looks like it works pretty well!

Looks like a neat solution.

Is there a weight limit on the bikes?

Interesting solution there...have you tried it at speed? I always wonder if I had the bike on a rear mounted rack would it fly off at speed or worse would the car take off!

So much cooler than that awful roof rack.

Thanks - looks smart.

Sold my bike rack to VWsurfbum had 3 years of using it for my time trial bike(added a legacy estate to the car collection and it became redundant). Great piece of kit, I'd always wanted a Boxster and at the time it was the only way I could have one.I think it cost about £400 with shipping from the states.
Always raised a few eyebrows but I liked the fact that there was no risk of damaging the paintwork,and pretty easy to use (not quite as easy as chucking it in the back of an estate!)