Lights

So, leaving all that irrelevant crap about lasers to one side, what you actually mean is that you can see it's switched on from half a kilometer away, not that it actually throws any illumination that actually lets you see where you are going. Woopie.

At least Pistanator and Mr.Smyth are funny when being dismissive, and mdcc_tester is always knowledgeably dismissive. You appear to just being argumentative, and boorish. Also, therefore rather lacking in usefulness. Irrelevant? Yes. Deeply uninformed? Ditto.