I sat in one when I was at the dealer. It was small, even for my 5'10" frame.
I don't see why anyone would buy this over a base model Prius II. You can get a Prius II for 22,950 (MSRP), and since they aren't exactly flying off the lots, they should be selling for a discount before long. The Prius gets much better fuel economy, is far roomier, and less harsh for day-to-day driving.