Infusion Designs has produced a vast number of unit concepts over its existence and as a result attempts have been made to realise each. In most cases this is a success with initial concepts migrating to full 3D models and then to fully working units, however there are a number of these concepts that were impractical for the time and as a result have never been fully realised. They are shown here in hope that the designs can inspire future Total Annihilation modelers to produce unique and interesting units.