Petite Star fit easily in the boot of a Puma, my wife's last car was a Pug 107 and anyone that has opened a boot on one of those will know that they are teeny, was the only buggy that would fit when we were looking.
Something like the one below.
http://www.argos.co.uk/static/Product/partNumber/7325582.htm" onclick="window.open(this.href);return false;