Again, purely for nostalgic reasons, a Rover 110 (P4) like this one. Rear doors opened towards the back of the car. Ours was 2 tone, fawn over brown. It sounds horrible but it looked great. I can still smell that lovely leather interior:
This was the first car we owned that I remember, registration number OWG 414.
My father was also a fan of french cars; we had a couple of Citroen GS's during the 70s.
If money was no object, it would have to be an E type Jaguar, V12 of course! Maybe an Aston Martin DB5 too.