san ramon wells interior, $2.4 million. and san jose south bay auto, $2 million. also among those who failed to pay the former owners of this lafayette taco bell who owe $836,000. that debt dates back to 2002 and like most of them, the state hasn't been able to collect. >> get craftier and aggressive and we need to do the same. >> reporter: implicating the collection efforts of the state, most of the companies on this list like the furniture store that used to occupy this building in san ramon, are no longer in business. by far, the most common offenders, car dealerships. the former owners of this ford store in pittsburgh owe $1.2 million. same with this dealership across town. chris hunt is with the contra costa taxpayer association. >> the question that immediately comes to mind is why is that money sitting there, particularly from car dealerships? if it's from sales taxes on vehicles, why wasn't it remitted immediately? >> reporter: whatever the reason, the state board of equalization plans to crack down on all tax cheats. but especially car dealerships with mo