The Absolutely Insane $700 Billion Idea to Fix LA Traffic? Tunnels!Alissa Walker11/24/15 7:40pm24514EditPromoteGo to permalinkA few weeks ago LA unveiled a sweeping new transportation vision for the city that will swap car-centric planning with more transit, biking, and walking. But a different plan says getting people out of their cars is not the solution. What we really need, are more places for those cars to go. UNDERGROUND.