China has had its share of high-profile failures (and successes) of late, but a recent high-speed rail crash has shaken the people's confidence more than past mishaps.
While paying for its hefty infrastructure costs may be ambitious, many high-speed rail systems cover their operating costs and even turn a small operating profit.
For the U.S. to have world-class high-speed trains, the government will have to subsidize them. The investment would be small compared to the billions lavished on highways and airports.
Users of public transportation often fit in the activity guidelines proposed by the federal Health and Human Services department, just by walking to their bus or train every day.