Cycling around in the dark can be dangerous, which is why having the 'XFire Taillight' would be great if you use your bike as your main form of transportation. Reflective lights don't always ensure that you'll be seen, but the XFire Taillight literally creates a glow in the dark bike path for cars to see. The safety-ensuring product comes from X-Fire and can be found on Amazon.
The light attaches to the back of your bicycle, and uses two lasers to project a visible path for other motorists to see. It's available in red, which helps make the lines stand out from the rest of the street lights. Grab one of these to make yourself stand out in the dark.