Hundreds of millions of dollars will also flow to local governments, as they get a share of state sales tax proceeds. But a key piece of the new tax law is in question. Cable juggernaut Comcast believes the measure’s sales tax on advertising services is illegal and is suing to get it overturned. A block on the tax would throw a major kink into the $77.8 billion budget passed after months of negotiations in the Legislature. And the latest transportation budget removes an exemption from tolls for public and private transit buses, vans, and rideshare vehicles on bridges.