In case you are looking for a low-cost prototyping board with CAN controller, you could go for http://www.cypress.com/documentation/development-kitsboards/cy8ckit-043-psoc-4-m-series-prototyping-kit
Otherwise, you could purchase the IC and use it in your custom board.
Either way, you require an external CAN transceiver that should be interfaced with the PSoC device's CAN controller.
That answered my initial question, but I have a follow up.
In reading the descriptions between the CAN controller on the PSOC4 and PSOC5, I noticed that the PSOC 5 states a CAN 2.0B while the PSOC 4 only states CAN controllers. I am integrating with vehicles of all make and model in all years. What is the difference between the different PSOC version CAN controllers and will I likely prefer to just get the PSOC 5, or will the PSOC 4 be sufficient?
That's a big help. Thank ya much