It borrows the independent rear suspension setup from the old E class mercs (i believe last model, i think 2000 or somewhere), and also has the 2004 S class benz 5 speed auto with autostick (manual shifting). I agree the listed 250kw sounds light for a hemi, it is governed though, and not sure where they've taken that reading anyway. Regardless you'd be pretty happy with the benz auto and diff setup putting that power to the ground, solid as there is in a car that size.
I agree exclusivity is what has attracted me to it initially. If i was going to buy one i would change the grill and put some nice chrome aluminium 20in wheels on it, dark tint, silver duco, sunroof, upgrade the sound system with twin 8in subbies in boot (boot is HUGE so can still fit golf clubs), also the whole dvd front/rear thing. I feel nervous posting this in here but i own a commie and was going to upgrade to the VE, but not so sure now this thing has come out.