And what use is a new baby?  Think of all of the unintended things that came 
out of the space program.  Start with your personal computer.  Maybe we will 
drive, maybe not.  Maybe better control of cars and information for drivers. 
Maybe better traffic management to save energy.  Maybe more effecient use of 
roads, which will lessen the need for new more roads and bridges.  If you 
could invent a system for blind drivers, couldn't you invent a system for no 
drivers at all?  Bad for truckers, good for transportation.  Take your 
blinders off and imagine, nothing starts with out that ability.