"Can-A-Lot" is a spoof/reference to "Camelot".
The first ever time children appear in Bob The Builder.
This takes place between the eighth and ninth seasons of the series.
This is the first ever appearance of Doctor Florence Mountfitchet, Rob The Builder (Bob's Dad), Dorothy (Bob's Mum) and The Librarian.
In the opening scene, the coaches on the train are very similar in colour to the red express coaches that Edward, Henry, James and Duck pull in Thomas the Tank Engine and Friends.