Roll up, roll up laydeez and gennelmen. If you're at Brands Hatch British Superbikes tomorrow, either go to the www.topgearsuperstore.com stand on the start/finish straight or collar one of the bevvy of lovelies wandering about the paddock and get your free, and great-smelling, Gary Mason car air freshener.
I have one in my car, as does Mason as does James Ellison, so they have been fully endorsed by people who know about these things.