This fall, millions of devout Muslims will descend upon Mecca, Medina, and Saudi Arabia's holy sites in one of the largest annual migrations in human history.

They're all cold. Cold as a witch's kiss. Mean temperatures of 40° Fahrenheit. Never get hotter than 70.

Each coach is insulated by a four-inch thickness of fibreglass and heated by two overhead 2 in. steam pipes, while all external doors close into rubber draught excluders.

Cultural genocide precedes physical genocide.