I went with this style hitch, due to overall height. If the rack was mounted behind the tag, my bike would catch all sorts of wind, thus dropping the mileage, also I did not want to have a hole behind my tag. I paid for about a 45 minutes of service time. Since the rear bumper does not have to come off it saves a lot of cost as well.
I had the same exact question as Volusiano. Great reasons. Thank you so much for posting these photos. I've been thinking about doing this with mine. I currently slap a trunk carrier on the big old Caddy when I take my bike out but would like to have a way to do it with the Volt too. This seems like the best way to do it.Thanks. All good points about the wind resistance due to the height, and lower installation cost.