Awwwwww. I don't know whether you have the Five Doctors anniversary edition dvd, but in the easter egg commentary there (the one with New Who producer Phil Collinson, David Tennant and Helen Raynor) they talk about Bessie as soon as she and Three appear on screen, and Collinson narrates that he actually as a toddler drove in her (apparantly the BBC sent the car on tour through UK malls, or something). DT is agog with fannish envy.