[MetroMPG]

Just picked up 2 of those round convex mirrors. Depending where you mount them, they could work fine.

One small problem with convex mirrors (particularly those round ones) is your vision has to adjust to their focal length. So on the driver's side, it takes a split second longer to check than glancing at a flat mirror (or even a mildly convex passenger mirror). Not a huge deal, but there you go.