Should be "any front-wheel drive car." It looks to me that they replace the rear axle with 2 electric motors (one on each side). I don't think they could install this on a car with powered rear wheels.
If I recall, that model Accord wagon had rear drum brakes.
edit: yep, it does have rear drums. I'm VERY curious to see how they intend to make this work for disc brakes, especially when the calipers have to wrap around that huge assembly.
The idea of rolling down the road and having a few magnets come flying off also scares the daylights out of me.
You're more likely to notice disc brakes -- they are more visible from outside the car and require slightly more frequent maintenance -- so you may not be able to think of many cars with rear drums.
The majority of OLD cars. Modern cars are switching to disk brakes all around. The best design is actually a hybrid brake - it has a drum brake in the middle used only for the emergency brake, and the outer edge is flat for the disk brake.
To me it is the same idea as the electric bike retrofit kits by Bionx.