LEE KRAMER'S ROOM: With Views

[ergo sum]

This seems to be what CO is doing.
Plug-In Electric Vehicle (PEV) Fee
PEV owners must pay an annual fee of $50, in addition to other registration fees, for a PEV decal. For registration periods beginning during Fiscal Year 2022 and every subsequent year, the Colorado Department of Revenue is authorized to adjust the registration fee for inflation. Additionally, beginning in FY 2022, the state may collect a PEV road usage equalization fee at the time of registration. Registration fees for each fiscal year are as follows: