I felt a bit sadgeeky so i did a full forensic examination of the image.. bear with me... its only 96kb

First an overview of the image.. poring over the reflections in the glass and paintwork reveals nothing, so lets move on to the surroundings, particularly those shown in the rectangle above.
2x zoom...

hmm, is that your awning in the background, D/D?
4x zoom...

have you seen this man? he is a dangerous escapee from a mental institution and is armed with a cheeky grin, shorts, and an alarming array of marital aids. if you spot him, do not approach, but call crimewatch crimestoppers with any information

those mk3s again, and the classic tin can

someone's silver mk3 (mk2 golf??), a mysterious roofbox, a fabia(?) and an S3(??)

just in case the GTi is the answer..
OK, still baffled by this... whats the answer

It's not gonna be something awful like "the porsche is a fibreglass fakie bodyshell with a G40 dropped in it, on top of an old bug chassis" (or morris minor) is it??