Hi again,
MR- that's what i thought. If only I knew all of this before we went baby shopping- 20/20 hindsight is a wonderful thing!
Belfie- We ended up with two, a capsule and convertible, and used one in each car. It is a good idea to have one for each car. When I was talking to the restraint fitting place today, they said they sell their ex hire capsules starting at $80, and they can guarentee they are well cared for, sterilised after each use and have never been in an accident, so maybe you could find something similiar? They were also telling me about a Safe'n'Sound maxi seat, taht converts from rear to front to booster. Pricey- about $400- but cheaper in the long run.