Lose the helmet, don a blonde wig

Latest research from the boffins in Bristol suggest that passing vehicles are further from a cyclist when they have long flowing locks, and no hair.
Should I invest in extensions, and ditch the helmet? Probably not: having had my life saved by a helmet when a car hit me I rarely go out without it. I doubt that a wig would have had the same ability to absorb the impact of hitting tarmac at 25mph.