diagrams of this. first of all, this is what they say it will look like. but -- >> it's like a helicopter, train combo? >> it's in a tube and you sit in chairs and there's 30 or so of you in the capsule. at the front, you have a compressor fan. i'll show you the diagram for that. in the middle, you have the passengers, and in the back you have the batteries, and you're going at the speed of sound through this tube. and here's something i know you'll want to take home and study closely. >> yeah. >> that is the compressor. >> this is the one that makes my head spin. what is this? >> this is the compressor motor that sits at the front and allows the train to keep moving forward. >> all right. so just to make it cool, you check on the web, 5 1/2 hours to drive this is going to 30 minutes. >> yes. >> that's incredible. if it works. >> he also says it will only cost to build this $6 billion or $7 billion. compare that to the $65 billion for the current high-speed rail plans for california.