Jules Verne was often ahead of his time, writing about many subjects and ideas long before reality brought them to life. In this case, however, his work has not aged well. Despite the interesting concept of a caravan pulled across India by a mechanical elephant, this is an exceedingly dull book. That is not the worst thing about it though. There are several main aspects of this book that are just at odds with a contemporary view of the world, so much so that it's hard to have any investment or interest in them. Take for example, that many of the "thrills" of this book come from trophy hunting. One character is trying to kill his FIFTIETH tiger, and his efforts to trap and shoot them for sport are held up as the pinnacle of bravery. In other moments of tension, wild animals such as panthers, tigers and lions, and even later on elephants, are portrayed as bloodthirsty and antagonistic, to a degree that seems fairly ridiculous. At one point, the group's camp is stormed by what is essentially an army of tigers and Panthers and various other animals, all working together with the goal of killing humans. In Verne's time this view of wild animals may have been more understandable, but today we know that this is not at all how animals behave, and so it just seems ridiculous instead of scary. And finally, the main antagonist in this book is the Indian leader of an anti-colonialist rebellion. Reading this in the 21st century, I find myself sympathizing more with the villain, who attempts to fight the invaders in his land, rather than the european protagonists who travel around their ill-gotten empire shooting tigers and dropping disparaging remarks about the native population. I understand that this book was written a long time ago, but literally nothing in it has aged well. I have read books by Jules Verne that I have really enjoyed, but this is definitely not one of them.
Disclaimer: I went into this book not knowing it was a sequel, but had I read the book that came before it, I think my opinions on this novel would still be the same.