Whens a Rolls not a Rolls?

When its got a polyester body on a scratch built chassis,

is powered by a Chevrolet V8 engine,has two Land Cruiser axles,and a Toyota four speed manual gearbox.Apparently put together after a wager to enter the 1981 Paris-Dakar Rally.

They made the overall shape a pretty good likeness to a real

Corniche.

Done