Hi I'd like to add a journey start and finish location to each question in my forum where a new user wants to post a Q. Is there any way that this could be achieved so that users of my site can search for Q&A based on a typical journey that they search for?

I only want a selection of questions to shown when somebody say types in London to Birmingham which are relevant to that exact route. My thoughts are all questions which have that tag would show with the number of answers etc shown for each question. 

Please let me know if you can think of any way to achieve this relatively simple tagging concept for each question.

Many thanks

T