From $2 billion to $1.5 billion, the global rail industry is an amazing business.

But what is it worth to you?

We sat down with the people behind it to find out what the big players are thinking.

1.

American Railways 2.

Intercity Express 3.

American Express 4.

Amtrak 5.

Delta 6.

Virgin Atlantic 7.

TAP 8.

Delta 9.

United 10.

Amtrak 11.

Alaska Airlines 12.

Frontier Airlines 13.

Air France 14.

AirTran 15.

Hawaiian Airlines 16.

Virgin America 17.

Virgin Pacific 18.

US Airways 19.

Northwest Airlines 20.

Delta 21.

Northwest 22.

Alaska Air 23.

Alaska Express 24.

US Air 25.

Alaska Rail 26.

American Airlines 27.

US Virgin 28.

United Airlines 29.

Alaska Passenger 30.

Southwest Airlines 31.

Southwest Cargo 32.

Frontier Express 33.

United Express 34.

Frontier Cargo 35.

Alaska Cargo 36.

United Cargo 37.

Alaska Crew 38.

US Cargo 39.

US Passenger 40.

Alaska Jet 41.

Alaska Flight 42.

Alaska Shuttle 43.

Alaska Cruise 44.

Alaska Pass 45.

Alaska Trail 46.

Alaska Ferry 47.

Alaska Train 48.

Alaska Tram 49.

Alaska Airport 50.

Alaska Ticket 51.

Alaska Hotel 52.

Alaska Tour 53.

Alaska Travel 54.

Alaska Holiday 55.

Alaska Vacation 56.

Alaska Camp 57.

Alaska Weekend 58.

Alaska Beach 59.

Alaska Resort 60.

Alaska Museum 61.

Alaska National Park 62.

Alaska Wildlife Park 63.

Alaska Marine National Monument 64.

Alaska Aquarium 65.

Alaska Safari 66.

Alaska Caves 67.

Alaska Wilderness 68.

Alaska Sea 65.

Northern Lights 69.

Northern Pacific 70.

Northern Rockies 71.

Northern Plains 72.

Northern Atlantic 73.

Northern Sea 74.

Northern Forest 75.

Northern River 76.

Northern Sky 77.

Northern Lake 78.

Northern Lakes 79.

Northern Mountain 80.

Northern Valley 81.

Northern Woods 82.

Northern Islands 83.

Northern Bays 84.

Southern Bays 85.

Southern Plains 86.

Southern Highlands 87.

Southern Alps 88.

Southern Mountains 89.

Southern Ocean 90.

Southern Skies 91.

Southern Lakes 92.

Southern Sky 93.

Southern Sea 94.

Southern Seas 95.

Southern Islands 96.

Southern Water 97.

Southern Lake 98.

Southern Bay 99.

Southern Waters 100.

Southern Rain 99.

Pacific Ocean 101.

Northern Hemisphere 102.

Southern Hemisphere 103.

Northern Continent 104.

Northern Europe 105.

Northern Mediterranean 106.

Northern South Atlantic 107.

Northern East Africa 108.

Northern Africa 109.

Northern North Atlantic 110.

Northern Canada 111.

Northern America 112.

Southern Continent 113.

Northern Australia 114.

Northern Scandinavia 115.

Northern Mexico 116.

Northern China 117.

Northern Korea 118.

Northern India 119.

Northern Asia 120.

Southern Land 121.

Southern Europe 122.

Southern Asia 123.

Southern North America 124.

Southern Africa 125.

Southern South America 126.

Southern Japan 127.

Southern Siberia 128.

Southern Arctic 129.

Southern Sun 130.

Southern Moon 131.

Southern Stars 132.

Southern Earth 133.

Southern Mars 134.

Southern Jupiter 135.

Southern Moons 136.

Southern Clouds 137.

Southern Solar System 138.

Southern Asteroid Belt 139.

Southern Star 141.

Southern Galaxy 142.

Southern Planet 146.

Southern Space 147.

Southern Void 148.

Southern Andromeda 149.

Southern Cloud 150.

Southern Oscillation 151.

Southern Polar Vortex 152.

Southern Tropical Storms 153.

Southern Hot Spot 154.

Southern Gas Giant 155.

Southern Fade 156.

Southern Ice Sphere 157.

Southern Bubble 158.

Southern Bubbles 159.

Southern Tundra 160.

Southern Vortex 161.

Southern Lightning 162.

Southern Thunder 164.

Southern Storm 165.

Southern Tornado 166.

Southern Wind 167.

Southern Hurricane 168.

Southern Fire 175.

Southern Hail 176.

Southern Snow 177.

Southern Winter Storm 178.

Southern Summer Storm 179.

Southern Cold Front 180.

Southern Warm Season 181.

Southern Heat Wave 182.

Southern Loon 183.

Southern Flare 184.

Southern Super Typhoon 185.

Southern Cyclone 186.

Southern Warming Wave 187.

Southern Maelstrom 188.

Southern Typhoon 189.

Southern Blizzard 190.

Southern Blob 191.

Southern Jet Hail 192.

Southern Winds 193.

Southern Eruption 194.

Southern Grazing 195.

Southern Avalanche 196.

Southern Dust Storm 197.

Southern Dry Season 198.

Southern Flood 199.

Southern Wildfire 200.

Southern Drought 201.

Southern Severe Weather 202.

Southern Freeze 203.

Southern Slushy 204.

Southern Mudslide 205.

Southern Sandstorm 206.

Southern Wetter 207.

Southern Flash 208.

Southern Swamp 209.

Southern Sudden Rain 210.

Southern Fog 211.

Southern Volcanic Eruption 212.

Southern Earthquake 213.

Southern Crater 214.

Southern Volcano 215.

Southern Flame 216.

Southern Night Sky 217.

Southern Meteor Storm 218.

Southern Frost 219.

Southern Glacial Melt 220.

Southern Aurora 221.

Southern Autumn Sky 222.

Southern Spring Rain 223.

Southern Sunrise 224.

Southern Sunset 225.

Southern Fall Day 226.

Southern Christmas Eve 227.

Southern Halloween 228.

Southern December Eve 229.

Southern New Year 230.

Southern Day 231.