Here's what we know:
* Horses are scarce and valuable: In the book, horses are a luxury and often associated with wealth and power.
* Horses are dangerous: The world of the book is a harsh and unforgiving one, and wild animals are not to be trusted.
* Matt's experience with horses: Matt, the protagonist, has very little experience with horses, and is portrayed as more of a city boy.
Therefore, it's unlikely that there's a "safe horse" in the traditional sense of a gentle, domesticated animal. Horses in the book are likely wild and potentially dangerous.
However, there are a few characters who could potentially have safe horses, based on their wealth and power:
* El Patron: As the ruthless dictator of the Scorpion Empire, El Patron likely has access to the best horses, and could have one that's been specifically trained for his use.
* Maria: Maria, Matt's sister, comes from a privileged background and could have access to a horse, although it's not clear if she's ever ridden one.
Ultimately, the concept of a "safe horse" is more about the character's ability to handle and control the animal, rather than the animal itself.