You're right, Lieta. There were a whole host of reasons why I wasn't crazy about that idea - one of them being that I thought it might be unrealistic, but I put it out there anyway.
Of all the original options (of which this one was not a part - for some reason I didn't think of it until later), my favorite still involved two trips - with Clark insisting he had to go, hitting it and getting amnesia, and Superman went for the second trip before Clark got his memory back. I still think that could have been interesting, but I definitely like this better.
countrygurl74 - Yes, in my head there are three people who can tell the differences between Superman and Clark - Martha, Jonathan, and Lois. And I think it's much easier for Martha and Jonathan since they already know the two men look similar, whereas Lois might be fooled. (I don't think she would be, but I think it's a possibility.)
How Superman regains his memory - well, isn't that interesting. But the process he goes through before that happens is one of my favorite parts of these chapters. (It will be up tomorrow.)
Thanks, Michael!