The Whomobile Action Pursuit Set - Palitoy - c1974
How cool would this have been?
Okay. It might be adapted from an old James Bond Thunderball Action Pursuit Set but at least it came with accurate plastic Whomobile, Bessie and police car models. (One-man hovercraft sold separately)
Sadly all the effort that the toy designers put into this little piece of toy heaven came to nothing. Jon Pertwee was so furious that his image was being used without his knowledge, that he walked out of the Doctor Who television series and was never heard of again.
No prototypes of this toy are known to exist. Ever.