there was a thread on here saying that it wasn't that great, but search is disabled so i couldn't find it. all the versions got great reviews at mtbr. i think it's a good idea if they put enough thought in it. Jeep makes one with the same idea but i've heard its terribly inefficient and problematic. the christini looks like the same mechanism but perhaps they spent more in materials and paid their assemblers more. I'd take a small hit in efficiency for far superior traction. I think if it does live up to its name your main problem would be finding a mechanic to fix it if something goes wrong you can't take care of.