about $450 million per year and uses 21,000 employees in 9,000 emission texting stations. When something like that does not work, you can not just shut it off. Too many operators', bureaucrats', and consultants' employment income depend on the revenue therefrom.

Ontario, Canada, is experimenting with a remote sensor to screen out the low-emitting vehicles and send them home without having to stop at the test center. Sydney, Australia, has a system and some new ideas how to use it. The state of California's new program will probably use a considerable amount of remote sensing, but is constrained by EPA on one side, which wants as much centralized treadmill testing as possible, and the 21,000 employees of the current system, who want to keep their jobs despite the evidence of their lack of success.

Meanwhile we are still trying new things. We have a proposal pending to measure smoke emissions from trucks crossing between the Mexico-California border. We have a program underway to place an emissions information billboard (the politically correct term is "variable message sign") at the Speer Boulevard-I-25 interchange ramp, and we are still measuring DU employee vehicles and doing a small repair program to show that we can obtain 20 to 50 times more CO emissions reductions that way than by converting janitors' trucks to natural gas fuels. If we identify your car, please participate. The program is both convenient and free.

As my last illustration for this lecture, I thought that I should show that beliefs based on little or no scientific evidence are not the sole perquisite of government bureaucrats in distant places. As illustration, I set on the screen two quotations, the first from Carol Browner of the USEPA, the second from the DU Core Curriculum Committee. They are reproduced below:

Carol M. Browner, Administrator, USEPA, to Jim Folsom, Governor of Alabama, Dec. 24, 1994. "We continue to believe that an enhanced test-only program using high-technology testing equipment is one of the most cost-effective ways for states to improve air quality."