Seems to me the pre-production show car had something like this. I remember that being the one difference I spotted in the photos. Way to go, Phil! The coolest car on the road deserves a cool upgrade like this.
Edit: Been trying to find the photo(s) I remember seeing, and not coming up with much. But it seems that what I should be remembering is the turn signal and wiper stalks had blue inserts on the ends that looked like they should light up (hint, hint...)
And there goes the first capacity bar! At 24,000 mi on 9/9/2013.
Second bar at 30,500 mi on 2/7/2015.