When I'm 710

I made my first CNPS sidebet last night. A certain young lady owns a car with a rego containing 710. Here's the deal... If I get to 710 (and use her car for the 710) before she sells it, I get from her the princely sum of one english pound. If she sells it first, she gets a pound from me. If I then spot her car (as my 710) driven by someone else after she sells it, payments are reversed such that overall she will have given me 50p.

So at the current rate, this gives her about two years to sell it.