Name: The Boundless
ISBN: 9781442472884

Kenneth Oppel

Aboard "The Boundless," the greatest train ever built, on its maiden voyage across Canada, teenaged Will enlists the aid of a traveling circus to save the train from villains.

The Boundless

Christine

Two good books in two days... heck, this is another Oppel steampunk novel after all. Highly reminiscent of his Airborn series with Will & Maren here instead of Matt & Kate. 
There was also a rather interesting literary reference to The Picture of Dorian Gray 4/5th of the way through, and I was pleased about it. 
Also like the actual historical things Oppel placed in the book (like the Chang siamese twins!)