No one chimed in to suggest other wise so i will assume it is borderline and nobody can or will take a chance with a assumption. Personally I can visualize how a smoke wand smoke trail would look, to some degree that is. It seems to be predictable.
I can fashion the spoiler ends out polyurethane (PUR and PU) then prime and a can of color match paint.
It will be contoured to minimize its height/ profile in the wind as the glass spoiler is.
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Save gas
Ride a Mtn bike for errands exercise entertainment and outright fun
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