If you're looking for a mobile device running Android off the shelf, you're not actually limited to HTC's two smartphones. SDG Systems have announced that their Trimble Nomad rugged mobile computing system is now available with Android OS 1.5 Cupcake pre-installed.
First announced as a Windows Mobile device with wireless data connectivity back in March 2008, the Trimble Nomad is based on an 806MHz processor with standard Bluetooth 2.0, WiFi and GPS. It has a VGA-resolution touchscreen display, up to 2GB of storage and meets the MILSTD-810F military standard for drops, vibration, humidity, altitude and extreme temperatures.
What's optional, however, is the Trimble's cellular connectivity: quadband GSM with EDGE data. That's actually yet to get Cupcake support, as is the camera and Bluetooth module. The Trimble Nomad, complete with Android OS 1.5 Cupcake, starts at $1,274.