So if you're driving around town and you pass a young female cyclist with vividly bright pink hair extensions in very large quantity, you're going to remember her when you see her again, right?

I've been seeing someone matching that description quite a lot over the last few months, on my way to and from work. The odd thing is, when I drive past her in the morning, she's going the opposite way to me, towards town. And when I drive past her in the evening, she's going the same way as me, towards town. It's as if she's constantly finding herself in Cherry Hinton and needing to get out.

So my theory is that she's a physicist, working in a top-secret teleportation research lab somewhere in the town centre.