Trains are hot and everybody (countries, states, cities and towns) wants serveral and soon a train building bubble arises and collapses and the train building business falls to less than half its its normal contribution to GDP.

FORBES: Let's Finance Supply-Side Tax Cuts With Laffer Shares

But longer term it's setting up a train wreck that could be even more destructive than the gaudy bursting of the high-tech bubble in 2000.

FORBES: Magazine Article