Changes

To hitch Southwest towards Madrid you are best to catch a bus towards the airport (501, 1,85€ as of 20152018), which stops at a large shopping plaza. You can get out here and try to hitch from an on ramp to the A2, but you are better to walk along the side of the A2 for about 2kms until you find a large 24hr Gasolina-Restaurant. From here it is easy to approach drivers for a lift to Madrid.