Another alternative is about 20 years away from full implementation, but it will take user error out of the task and that is driverless cars.  The city and state could do absolutely nothing and eventually, the technology for driverless cars will mature and be significantly a lot cheaper by then allowing for mass deployment of such cars which would significantly reduce the amount of traffic because we would no longer be at the mercy of traffic caused by those that should not have a license to begin with since they have poor judgment or drive very slow.  Rubbernecking would be eliminated because any cars that are stalled would instantly communicate to other cars that there is a stalled car and the rest of the cars would automatically and efficiently go around the stalled car.  We could provide a $1,000 tax credit to 1 Million drivers and that would still be $9 Billion cheaper than the current rail system.  (cont)