Of course. Two roof bars or a roof rack (but without ridges!) will suffice. Of course, it is possible to have three or even four roof bars. In this case add 1 additional pair of NuFix fastenings per bar (so 2 pairs more for 2 more roof bars).
Options for tall vehicles are available: larger ladder, remote locking systems, etc.
All this is available when configuring your Hussarde tent on the website, very simply!