Madrid to Avila, Segovia by car
 

My wife and I would like to drive from Madrid to Avila then Segovia on a Saturday. Since it is a Saturday, would there be Any issues departing from the Chamartin station?
I also need to conquer the problem of short hours at rental car agencies on a Saturday...

Madrid to Segovia by car
 

There shouldn't be any problem driving on Saturday from Chamartin outside of the traffic, but there is no way of getting around the hours the rental car agencies are open. They are what they are unless you pick the car up somewhere else.