>> commissioner phong, would you like to go first? >> go ahead. >> this was a great overview. it obviously took -- at there's a lot of moving pieces that we hear -- that we have here. regional solutions or solutions, state solutions, and each one of them have their parts to play play amongst each other. i think, i guess the question -- the biggest question i have coming out of this is, for this city, and maybe for the bay area, what is the total cost of the solution in dollars, and then the second question, what is the total cost of the solution and number of units needed? what are we working towards, what do we need to get to? when the mayor lee put a bond measure on the ballot a couple of years ago, three years ago at 50 billion -- $500 million in transportation, in his speech he said, we have 9 billion-dollar problem, and here is my solution. my response was why aren't we going for the $9 billion, and forget the 500 million because you are solving the problem, because transportation is experiencing an incredible amount of gridlock. i think we really need to understand the i