Actually, that's a pretty good idea CMHennigan has - the car has not been flying off store shelves, so if they have one or two on the lot (especially if you find a dealership that had one as a salesperson-driven one), you might just be able to convince them to do a longer test. But, unless you are new to purchasing a car, you surely realize that there isn't much that you will glean from four or five hours with the vehicle, that you cannot find out in 20 minutes. Yes, the first time is a bit overwhelming with all the buttons and displays, but if you take a few out from different dealerships, you will have a good idea of how the car will work for you.
Meanwhile, welcome to the forum, and if you have any questions that you cannot find the answers to, just ask. But do us all a favour and search first (some of us get a bit testy when new threads keep asking the same questions), or post them on this thread and we'll help you find the answers!
I'm from near London, ON, BTW. Hoping to set up a CR-Z meet this spring. Keep an eye on the Canada Regionals pages for updates! You are welcome, even if you haven't made a decision yet.
Edited to add: just realized, I didn't answer your original question about rentals. I haven't seen or heard anyone mention the car being available in a rental fleet. But it is a bit of a niche car, and it probably wouldn't be in service enough to make money. I don't know if any of the larger rental agencies rent Honda's here, come to think of it. Mainly Detroit brands.
SOME SAY, that when he gets into his car, he plugs the IMA cable into his left ear … but no one can tell who is charging whom!