Comment Re:Google should talk with Tesla (Score 1) 236
The reason it's not trains (or other forms of rail) is for two reasons:
1. Need to buy huge tracks of land in roughly straight lines.
2. Up front cost to actually build a rail system.
America is horribly bad when it comes to modern rail, because it's been effectively dead for decades outside of a handful of Amtrak commercial runs and industrial tracks. So any effort to really make use of rail is going to need to build new rail. Even short runs of light rail track these days costs billions and can take decades to build. You also have some really big players like GE which build most of the locomotive engines in use today and a single locomotive engine costs millions of dollars to build. In comparison one self-driving car only costs hundreds of thousands at most.