Hi all,
I would really be very interested in having CAN bus managed by MySensors.
My new house is being built and I already planed to have a RS485 bus running along the house (RJ45 cable with one pair dedicated to RS485 bus and one pair for gnd/+5V). Having done some tests, I realize that I'm facing a lot of collisions and I don't want to explain to my wife that the light does not switch on when she clicks the switch because of a collision 
So, I'm was looking at solutions based on CAN bus and was even ready to give up with MySensors (although I love mySensors) when I ended up on this thread.
@kimot : have you progressed on your implementation ?
If so, I'm OK for being your beta-tester, I only need to exchange integers between the nodes and the gateway, no strings so the limitation of the packet size is not an issue for me : 8 bits are sufficient to me.
