> This is just quibbling about exact numbers. You don't address the main point that we don't need the space efficiency of trains.

I gave your hand-wavy explanation of how Uber reduces congestion more credit than it deserves. Most evidence suggest that Uber actually increases congestion, not the reverse.

> And yes, long trips on the train are likely cheaper than Uber. But most trips aren't that.

There is no trip by Uber which is less than twice as expensive than BART or 3 times as expensive as a bus here in Oregon. A short hop on BART is about $2.00 versus the $5.80 base rate on Uber. If your Uber gets stuck in traffic which is common in the Bay, the math gets even worse.

And again, this is in a country with rather mediocre public transportation options. Other countries have vastly better funded and run public transportation which is even more cost effective.