We are not afraid, but we cannot overlook it as a factor. My experience in rail transportation tells me that it is often overlooked. That causes a number of problems when a new rail system begins to operate. It happens a lot. Temperatures below 20o are not considered really cold in Canada, but with steel, that is the point at which problems begin to occur. Any company's technologies, cars, trains, can be adapted to handle temperature. That is not necessarily what causes the most problems. It is mostly the other technologies that support the system.
On May 26th, 2009. See this statement in context.