Hello downtown_sausage and welcome aboard! We are going to need your CAN skills soon. So far I have Due running CAN 2.0A but with a mixed Arduino-Atmel library. I hope to release a couple of simple sample sketches and a tentative CAN library in github very soon. I am following guidelines/advices from the Arduino team and Atmel but everybody is welcome here. The scope: once released the CAN library, we'll need as much people as possible to be involved and contribute with ideas, applications, improvements, fixing bugs, etc... remember, this is the first Arduino board with embedded CAN controllers: just transceivers between the board and real CAN device, so, a new Arduino Art is oncoming and a lot of work to do. Thanks!