Absolutely INSANE!
Here's my alternative plan: Take the Circular, and Linea 10 (metro sur) and make them run 24 hours, like in NY- but after 1:30- run with less frequency. Helps the extra traffic stay out of Madrid (why bring your car with nowhere to park when you can still catch the subway/bus home?!
)
Addina a Cercanias is going to be pretty useless running into the center- especially when Cercanias closes at 11pm! :o Or an extra metro line when another exists that does the job!
4 years is WAY too long to dig up that area! It doesn't need it- its a waste of money and time- not to mention going to hurt the tourism and the shop keepers in the area (I could less about the women waiting for the never arriving bus- that may be the ONLY positive thing out of this mess!)
Who's stellar idea was this anyway
What a mess!