Could a HANS device be useful without a helmet at all, using it with a head harness.
By head harness I mean something like this
http://www.bodysolid.com/Images/Product ... _Front.png
http://www.bodysolid.com/Home/MA307N/Nylon_Head_Harness
After all HANS devices can be used with open face helmets.
Of course it won't protect the head from penetrating or traumatic injuries but maybe can find some use for road cars?
After all many people drive with hats on, so the confort should be similar.
Maybe the head straps can be attached to the seat so you don't have to wear the over shoulders part. If so should the seatbelts be attached or routed thru the seats?
I was thinking about it after a head collision I just suffered myself, where the seatbelt got my torso next to the seat while the head kept on moving forward. I still have a really sore neck from it.