Check it out. I live right by where these are made in France. They are not real common even here, but when you do see one, they grab your attention. They are expensive (26,000 Euro ~30,000 US$). They mush have a "cult" following, because You can buy 2 pretty nice other brand bikes for 26,000E.
The 996 part must have been someones imagination and some fancy body work / decals.
I read an article once about a guy who did that to a 916. He was tired of all of the cruiser based side-hacks, so he turned his Ducati into one. The article said that it actually ran pretty good because of the v-twin grunt. I think the guy was paralyzed or lost a foot or something like that. It really looked good though.
Saw a guy at the WSB at Brands Hatch a couple of years back with a 916 fitted with a 'Sidewinder' side car, its not really a sidecar, more of a single sided stabiliser thats hinged to allow the bike to lean in corners.
He was saying that he lost an arm & a leg in an accident many years before, but always wanted a Ducati.
One of my friends back home in the UK who is also disabled, rides a M900 with modified gear shift & rear brake on the same side.