For moving people? It's laughably easy: the one with bike lanes, sidewalks, public transport.

Cars are the least efficient form of transportation if you REALLY care about throughput.

> Which has higher throughput?

For a 3.5m / 12' lane, you can move 6-8x more people via bicycle, and 7-10x more pedestrians, per hour, than via private motorized vehicles ("cars"):

* https://en.wikipedia.org/wiki/Passengers_per_hour_per_direct...

You can fit like 50 people on a bus, and maybe 10 in the equivalent space taken up by two SUVs. Seriously, how is this a question?

https://www.mikeontraffic.com/numbers-every-traffic-engineer... says one lane peaks around 1,900 vehicles per hour. Even if we assume each vehicle only carries one driver, we need 38 busses per hour (one every 95 seconds!) to match that capacity. In practice we're lucky to see two busses per hour scheduled.