http://www.cpustick.com says in its 2nd paragraph:
Additionally, when coupled with an optional Freescale MC13201 ZigFlea™ Wireless Transceiver, the MCU may be remotely controlled by another MCU, via a telnet/rlogin-like interface, eliminating the need for a direct connection to the host computer altogether. Also, BASIC programs may trivially remotely access variables on other MCUs, enabling the use of “remote pin variables” or other forms of inter-MCU communication.
Do you think I could get the robocars to communicate with each other using this? This could add greatly to the number and types of games or competitions we could devise. All this with 8K of program memory? Really?

Ken