It's supposed to expire at the end of 2018: https://arb.ca.gov/msprog/carpool/carpool.htm https://arb.ca.gov/msprog/carpool/carpool.htm Whether or not it will

It's supposed to expire at the end of 2018: https://arb.ca.gov/msprog/carpool/carpool.htm https://arb.ca.gov/msprog/carpool/carpool.htm Whether or not it will be extended again is an open question.