Fascinating - especially the origin of 'silhouette' and the side note on the origin of 'mob'.
Thank you Mike.
Speaking of silhouette, Lamborghini made a car called the Silhouette in the late 1970s. It was a version of the Urraco with a removable roof panel.
Here's a photograph of one.
If you wanted one at the time, it blew a £13,600 hole in the wallet. You could buy a Rolls-Royce Silver Shadow for less money back in 1978, or alternatively buy a 3-bedroom semi-detached house (though not in London - even then, house prices were inflated in the capital, but not to the ridiculous extent they are now).
In the US market, one of these cars would cost $27,000 back in 1978. I'll let the Americans here tell us all what you could get for that money in 1978, as they know far better than I do about this.