There’s a petition to reverse it here tinyurl.com/stolenbikeuk

As for whether or not they'd investigate a car theft, I'm not convinced that many are stolen from stations, unlike bikes, to it's unlikely the claim will be tested.

But the whole article is about British Transport Police, isn't it? I can't see anywhere in the article that mentions other police forces?

"The BTP have also said it will not investigate car thefts if the vehicle has been left for more than two hours"

I bet Susie Dent has the answer

Have you seen that Sustrans have changed their name to Walk Wheel Cycle Trust? Not the catchiest ...