Do you drive a Toyota Prius, Honda Civic or Honda Insight? Are you one of the 85,000 Californian's with a yellow "clean air" sticker that allows you to use carpool lanes?

Enjoy your ride TODAY - these stickers expire July 1.

The Clean Air Sticker program was created in 2005 to encourage commuters to adopt fuel efficient vehicles. In 2005, these technologies were considered cutting-edge. In exchange for being early adopters of a fledgling technology, these stickers allow drivers to use a high-occupancy vehicle lane without meeting the high-occupancy requirement. Thise exchange saves an average 17 minutes each way on the Bay Bridge.

Vehicles that run entirely on electric power, compressed natural gas or otherwise meet California's super ultra-low emission vehicle standard are still eligible to receive white stickers. Vehicles that were hybrid, alternative fuel or met other less rigorous standards were eligible to receive one of 85,000 yellow stickers.

As expected, not everyone is happy to see the yellow stickers expire.

"Has anyone considered a class action suit against the state of California?" suggests a reader on the 511 Contra Costa blog. "I spent an extra $10k for my hybrid (vs. non-hybrid) solely based on using the HOV lane, and now that privilege is gone July 1."

Both yellow and white sticker programs were always intended to expire as fuel-efficient vehicles became more common. The yellow stickers originally expired in December, but received a six-month extension from the California Senate. The expiration of the white stickers was recently extended to Jan. 1, 2015.

While 85,000 hybrid-car owners will sit through a longer, more congested commute beginning July 1, the program is already shifting its focus towards another fledgling technology - plug-in electric cars. A new, green sticker will be available in 2012, initially available only to owners of Toyota Prius plug-in hybrids.

Do you have a yellow sticker? It might be time to consider getting a FastTrak device and reviewing the Bay Area bridge's tolls.