Wonderful! Such an original premise, and the issues they're facing seem very pertinent. You've got the atmosphere of the period perfect - just the first paragraph, with the description of the bike, and then all the other little details just add up to something wonderful. I loved the characterizations of these two; you can really feel their frustration and tiredness and determination. And I loved the sex very much; it was beautiful and full of emotion and avoided a lot of the cliches you normally see. Wow.