CarTracker STM32F10xCx, STM32F10xRx, STM32F205Rx, STM32F405Rx, STM32L1xxCx, STM32L1xxRx support. Telit SL868 or SL869 Telit GL865 or GL868 CAN support, MMA7455 accelerometer, standard SIM or SIM On Chip 64 pins version can use battery, USB and RFM70 module (or other)
Shared PCB on OSH Park:
Cx version http://oshpark.com/shared_projects/hou07XOD Rx version http://oshpark.com/shared_projects/wFTza6Pe
Cx version support direct connection GPS to GSM via wires (or change layout) so you can use buildin Python to implement tracker functions without STM32 MCU.