CAN with flexible Data Rate
See the BOSCH white paper on CAN-FD (V1.1) http://www.semiconductors.bosch.de/Fmedia/pdf/canliteratur/can_fd.pdf
Extended CAN protocol where the data field is transmitted with a higher bit rate than the arbitration field. Another improvement is the bigger pay-load up to 32 or 64 bytes per CAN frame are in discussion.