I have a love-hate relationship with cones. Over the past three-and-a-half decades, I've probably set up a few thousand "witches' hats" along the sides of race tracks - and then collected them up, stacked them, and loaded them into vans, trailers and trunks of cars. I've also pried more than a few of them from the wheel wells of hundreds of cars. I've used them as a teaching tool, and I've hit my fair share of them.