So far I have been folding down the rear seats and throwing the bike in the back. Kind of a pain.
This is super easy in a Prius. I didn't think a bike would fit in the back of the Leaf at all. Certainly not with the front wheel on? I'd love to see a picture if you've got it. Seriously this cargo aspect was one of my main concerns with the leaf. I carry bikes on the roof, on the back and on a trailer... but want to carry them INSIDE whenever possible for several (obvious) reasons.
Here's with one and two bikes in the Prius - complete 56 cm road bikes with everything attached. Passenger seats are also all the way back on their rails. Oh... to have a full electric Prius!
http://evnut.com/images/prius/puv/prius_bikes01.jpg
http://evnut.com/images/prius/puv/prius_bikes02.jpg