Gosh...I really do envy those of you that live in areas where bike shops offer road bike rentals. I honestly don't know of any around here...except for the bike rentals (cruisers) down at the Lakefront. I know for sure, that our local Trek dealer does NOT. Infact, I even know of 1 local bike shop in downtown Chicago, that will not even allow a TEST RIDE! Can you imagine buying a $3k bike and not being able to ride it before you hand over the money?!?! That is ridiculous. That shop's reasoning for no test rides, is that it's too much of a liability given their location in downtown Chicago. 
@lisa...very sorry to hear about your MIL. I'm going through a similar scenario with my sister (stage IV pancreatic)...cancer does indeed suck.
Linda
2012 Seven Axiom SL - Specialized Ruby SL 155