I was browsing the interwebz looking for information on prototype tanks when I came across this pic with a dark blue/black convertible sports car in the background. What is it? I think it looks like a TVR Griffith or Chimaera, although its wheelbase looks longer than either of them.

By the way, that tank is purported to be the only surviving one of two prototypes of the FV3805 self-propelled gun. It was found hiding in a bush behind the tiny Conflict History and Remembrance Museum on the Isle of Wight underneath a tarpaulin.