The really stupid part about the ruling is that it does nothing to stop the tobacco companies from using sponsorships to promote their products to an audience of under-18 people. So this ruling keeps under 18 drivers off the track, but still allows the tobacco companies to promote themselves to under-18 year old members of the audience.
So in short, the California ruling does nothing to address the original intent of the agreement, which was to stop tobacco companies from promoting to minors.
Jim