Oooh I always wanted one of those.
I always thought the fastback was a cross between a Capri and an Audi Quattro......
Mind you I was drinking quite a lot at the time.....
I had the 827SLi saloon, very nice car, very fast and really well equipped, everything electric, the only thing it didn't have was air con. We used to design the vehicle electrics and it used to make me laugh because they did a police version which didn't have any equipment like a sunroof, we didn't even give them electric windows. The engine had been chipped however!
As part of putting field miles on cars, engineer's were allowed to take test/demo cars home for the weekend, so you had 21 year olds driving around in 140mph cars. It did end in tears though as a few cars were written off and we were lucky no one was seriously injured. Anyway they changed the insurance so that you needed to 25 in the end.
It was quite a common practice with the car manufacturers as you tried to get as many miles on test vehicles as possible, I've also worked at Jaguar Whitley and have a few stories to tell about that place. My mate worked as an engineer at what used to be Rolls Royce in Crewe and as a 21 year old would regularly be driving around in Bentley's and Rolls!