The Theme is an overall great solution for a rental car website need. It is compatible with most of the major plugins.
The theme had some bugs when loading the first times, and I had other difficulties while working on it. Nevertheless, they make it up with the support they give. Jim and his team answered within hours of all the e-mails i sent. Most of the times with a concrete solution.
If you are familiarized with touching a bit on your code (changing a parameter here and there, nothing big), then this theme will work for you.
On the other hand, if you don't want to touch the code at all, it is probably better to look for another theme as the minor bugs require you to have a basic knowledge of FTP and HTML.