Murray Missle,
We keep our Trek T900 as a backup. We ride it once a week to keep it in good running order. I like having a backup so if we wake up and see a flat tire, I don't have to fix it at that moment to ride. We just grab another tandem. Okay, we now have 3 tandems, so we grab 1 of the other 2. But, they are all different (rationale). My stoker was terrified of riding on the roads for some time. She is no longer terrified, just plain scared. But, we ride every morning, part on roads, part on college campus, levee path, etc. You may find your stoker will be more willing to try roads on the Trek T900. She may feel like she could jump off with the low top tube. My stoker has never jumped off. But, she took comfort in that thought when we first got the T900.