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Vehicle: Car: Fuel: Alternative
Energy source indicator   (0)  [vote for, against]
Why not ?

A simple coloured symbol on vehicle licence plates indicating the energy source employed (Gasoline/diesel/electric/hydrogen /over-unity device/Mr. Fusion generator).
-- 8th of 7, Mar 04 2017

//Why not // And, at the same time, why?
-- MaxwellBuchanan, Mar 04 2017


So those using sticks of dynamite can be given the appropriate distance.
-- wjt, Mar 05 2017


A school bus powered by the child passengers pedaling would be classified as corn flake powered in the morning and peanut butter jelly sandwich powered in the afternoon. So a yellow flake and sandwich symbol on the bumper.
-- popbottle, Mar 05 2017



random, halfbakery