I use the carpool lane every day with my daughter in the car but it's not much faster given the number of people who blatantly disregard the rules. There's nothing else to do but listen to music and pay attention to this. There are days that with the two cars in front of me and two behind me, three cars of the five of us have single drivers. I have seen city cops using it with only the cop driver in the car (the freeway is patrolled by state cops). I still remember his patrol car number was 911404, because that's code for "Where are the cops? 404 NOT FOUND". Just this morning I saw a single woman in a Corvette convertible driving in the HOV lane. This was the same woman who despite the muscle under the hood was in front of me on the on ramp doing about 45 MPH merging onto a 65 MPH freeway.
What should be legal is me firebombing these people. Watch out for that guy in the Honda Element with his 2 year old daughter in the back seat, that guy is THE ENFORCER. Either that, or we have a penalty system like Finland, where they tie the penalty to your income so that people in Mercedes and Corvettes who seem more likely to disregard the rules and such receive fines that they wouldn't just brush off. That's probably more reasonable.