Do you know if they are going to be electric?

As someone wondered aloud yesterday...is there nuclear in the future for KSA?

I know they have been rumbling about needing nuclear weapons if Iran gets them.

The monorail, the Metro and the Mecca-Medina rail will be electric. The Landbridge and the North-South line will be diesel (and largely single track, but engineered for easy double tracking).

Alan