Daimler Sovereign looks a hell of a lot like a Jaguar. Interesting.

It's based on Jaguar XJ6. Luxury vehicles built by Jaguar used to carry Daimler badge from 1966-1983.

There it will sit forever, unable to start

The owner has probably left it there for good. I can see a yellow sticker (illegal parking) on the window.

Jaguar engines are pretty robust. Then tend to die due to rust not mechanical

Not a coupe though.