hsrp source address

Based on my machine's arp table, the mac is a virtual mac for .1. The actual addresses (.2 and .3 in this case) have different macs. Additionally, it's not always a 'physical' active router, as in many cases its a SVI. In this case the SVIs have their own macs, and the hsrp address also has the virtual. In the cisco world, the SVI macs would usually start with 00d0 and the hsrp mac would be 0000.0c07.ac01.

I stand corrected. While the arp entry for .1 is the hsrp virtual mac, packets forwarded by the active router have the real mac of the SVI it looks like. You can run wireshark (formerly Ethereal) and see for yourself.