XOJET operates under the "rolling rest" policy. We just have a fairly new system in place, as CEFO mentioned, that helps reduce the chances of flying fatigued. The reality is you can go wheels up out of TEB at 0700, land in PBI at 0930, duty off at 1030 and be legal to fly 10 hours later by their book.
That said, the safety culture here is changing and in order for the company to try and do that to a crew they have to jump through certain levels of approval before they can try to task you with that trip. I also know of crews who have been asked to do such trips within the last few months and turned them down with no repercussions.