default.aspx

I can have a folder called "cars", and in it I have "chevy.aspx", "ford.aspx, etc

or

I can have a folder called "cars", and in it have a folder called "chevy" which has a "default.aspx", and a folder in the "cars" called "ford" which also has a default.aspx.

 This way, instead of:

www.blah.com/cars/chevy.aspx and www.blach.com/cars/ford.aspx

I can have

www.blah.com/cars/chevy and www.blah.com/cars/ford

 

s one better than the other for SEO? Is this the standard way of making the navigation so that there is no ".aspx" extension to the page name?
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