If present rates of improvement continue, however, we would expect the cruising range of electric cars, for example, to intersect with the average range demanded in the mainstream market by 2015, and electric vechicle acceleration to intersect with mainstream demands by 2020. - Clayton M Christensen
A war of ideas can no more be won without books than a naval war can be won without ships. Books, like ships, have the toughest armor, the longest cruising range, and mount the most powerful guns. - Franklin D. Roosevelt