I Need Your help

As you know I am an avid biker and have a need to sometimes throw my bike in my car to get to the start of a ride.

I am trying to decide whether or not to install a trailer hitch bike rack like this Audi owner did,

or go balls to the wall like this Porsche owner I saw on the Gardiner Expressway with a roof rack.I was leaning towards the trailer hitch until I saw the Porsche, now I'm thinking the roof rack looks way sexier.

Thoughts anyone?