...all of these can be achieved by adding enough lanes to your freeways. Enough many be quite high number, butt hat's fine: building robust infrastructure to make life better is what my taxes are for.
"Robust infrastructure" is good. "Adding lanes to freeways" isn't the only way to reach that goal--and it isn't necessarily the most cost-effective use of those tax dollars. Just laying down roadbed and asphalt isn't terribly costly; call it $10 million or so per mile of 4-lane interstate. Building wider bridges, digging supplementary tunnels, constructing complex interchanges, realigning adjacent utility conduits and ramps--well, that costs quite a bit more. Expropriating massive amounts of land adjacent to existing interstates in dense urban areas - or adding parallel routes, or building stacked or buried lanes - is extraordinarily, sometimes ruinously, costly. (Boston's Big Dig cost something like $200 million per lane-mile.)
And each lane gets you about 2,000 cars per hour, at best. If you have a million people in the suburbs who want to get to work between 8 and 9am, and they're all driving their own vehicles, your system grinds to a halt unless there are 500 live Interstate lanes into the city. Worse, each additional car you add to the city means more traffic on the roads in town, and demand for parking, and production of local air pollution, and so forth. "Build more lanes" is a solution that ultimately just doesn't scale.
In contrast, bus rapid transit systems can achieve at least 10,000 passengers per hour and sometimes as high as 30,000 per hour depending on configuration. Light rail achieves similar passenger numbers. Metro (subway) systems typically top out north of 30,000 passengers per hour, per line; Hong Kong's metro system clears 80,000 per hour on its highest-traffic lines. (For those keeping score, that's enough to offset 40 Interstate lanes.)