That's a steam train, you ninny

Arthur:

[the sleigh is flying across Toronto and traverses a curved building; people inside see it]
They can see us. Grandsanta:
Well, pull the camouflage lever. Now, then, we'd better draw in a few skyscratchers. Grandsanta:
[Arthur fiddles with the controls and pulls the wrong lever and the sleigh transforms into something that looks like a steam locomotive]
That's a steam train, you ninny