California Code, Vehicle Code - VEH § 9250.2

(a) The department, if requested by the Sacramento Metropolitan Air Quality Management District pursuant to Section 41081 of the Health and Safety Code, shall impose and collect a surcharge on the registration fees for every motor vehicle registered in that district, not to exceed the amount of six dollars ($6), as specified by the governing body of that district.

(b) This section shall remain in effect only until January 1, 2034, and as of that date is repealed, unless a later enacted statute, that is enacted before January 1, 2034, deletes or extends that date.