I don't "plan" to look like a car, but if I don't use a light or reflective band on wheels or pedals, what drives will see from distance will be some moving object (the light is moving). In distance they can't tell if it's a bike or a car. I was just wondering if some people want to be identified especially as a bike as opposed to a car (rather than opposed to, say a still object with a light).
The brain will try to make sense of the signals it gets from the eyes. The sooner this happens, the quicker the brain can decide on the correct action. To delay this process is not a good idea.