Hi Sean , I have experienced the flap cover breaking off and had to make a substitute cover. I don't think it is sold separately.
This occurred when i put the car into drive while it was plugged in . It would not go forward but since I was parked on a slope , it rolled forward and ripped the pistol off of the car causing the damage.
I was not the first to have this happen -- here is a posting with the discussion on this subject if you're interested - where I posted a link to my photos of my home made cover.http://myimiev.com/forum/viewtopic.php?f=22&t=2346&p=19527#p19527
Puey Bluey 2014 Miev
180,xxx miles, 190,xxx km
Blackie - 2012 ES Miev 2 years - 67,000 km / (41,630 miles)
Total Electric miles driven 221,630 miles (257,000 km)