As I was driving on the I-40 interstate the other day, I noticed how of the 12 feet of concrete devoted to a travel lane, the typical car or truck only touches two, one-foot-wide strips where the tires are. What a waste of the other 10 feet of concrete.

It made me realize how little the car has changed since it was first introduced. Oh, sure, plenty of progress has been made to the inside of the car, but what about the rest of what it takes to make a car go: the infrastructure? There are so many things we could be doing with cars but haven’t yet tried.

Why do we still build roads? All that impervious, land-hogging, surface, and only a fraction of it is useful to any vehicle. Well, the Romans did it, some might say, but thats because stones were all they had.
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