I have a bar mount I use in the race car and the buggy, but on the nose of the buggy everything looks flat. I like the incar videos of my shifting and whatnot, I usually mount it in the center of the vehicle overlooking the gauges and out the front of the veh. I don"t enjoy first person or POV videos myself. I prefer to turn the camera on, hand it to the passenger and then hit some stupid shit!!
This is my home grown mount, I've tried quite a few different locations clamping it on the mirror is the easiest the videos aren't wonderful but they aren't bad, you can flip it forward or back biggest issue is mud getting splashed on the lens but if it's in arms reach you can just wipe it regularly.
This is my favorite mounting location but it is unruly, I want to build a spring loaded bracket to mount the camera at some point but even then it wouldn't be something that you could just hook on and wheel normally.