DarkMagic
Super Freak
The Batmissle thing would be feasible for HT... the Tumbler and Batpod on the other-hand would be much more complicated to do.
The thing is, neither a Batmobile-to-Batmissle or Tumbler-to-Batpod is feasible in while maintaining anything near HT's acceptable level of detail /accuracy. Even the filmmakers of Batman Returns and The Dark Knight knew this. It's all special effects. The Batmobile to Batmissile scene was achieved using a blow-apart model, that we never clearly see in "Batmobile" mode because it would have seams that the Batmobile didn't. The entire sequence in TDK where the damaged Tumbler's panels shift until the Batpod springs out is CGI.