The train cars are open where they join, so when you're inside you have one big long uninterrupted open space from end to end.
May 04, 2015@11:30

K5__0679
1/80 sec at f / 4.0@31 mm
ISO 800
PENTAX K-5
smc PENTAX-DA* 16-50mm F2.8 ED AL [IF] SDM