/summon MinecartCommandBlock ~-2 ~1 ~0 
{Riding:
{Riding:
{Riding:
{Riding:
{Riding:
{id:MinecartCommandBlock,Command:/setblock ~-2 ~-16 ~1 glass},
id:MinecartCommandBlock,Command:/setblock ~-2 ~-16 ~-1 glass},
id:MinecartCommandBlock,Command:/setblock ~-2 ~-16 ~ glass},
id:MinecartCommandBlock,Command:/setblock ~-2 ~-17 ~ glass},
id:MinecartCommandBlock,Command:/setblock ~-2 ~-1 ~ activator_rail},
Command:/setblock ~-2 ~-2 ~ redstone_block}

/summon MinecartCommandBlock ~-3 ~1 ~  
{Riding:
{Riding:
{Riding:
{Riding:
{Riding:
{id:MinecartCommandBlock,Command:/setblock ~ ~-15 ~1 glass},
id:MinecartCommandBlock,Command:/setblock ~ ~-15 ~ glass},
id:MinecartCommandBlock,Command:/setblock ~ ~-15 ~-1 glass},
id:MinecartCommandBlock,Command:/setblock ~ ~-17 ~-1 glass},
id:MinecartCommandBlock,Command:/setblock ~ ~-17 ~1 glass},
Command:/setblock ~ ~-18 ~ glass}

/summon MinecartCommandBlock ~-4 ~1 ~ 
{Riding:
{Riding:
{Riding:
{Riding:
{Riding:
{id:MinecartCommandBlock,Command:/setblock ~ ~-18 ~1 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-18 ~-1 glass},
id:MinecartCommandBlock,Command:/setblock ~ ~-19 ~ glass},
id:MinecartCommandBlock,Command:/setblock ~ ~-19 ~-1 glass},
id:MinecartCommandBlock,Command:/setblock ~ ~-19 ~1 glass },
Command:/setblock ~ ~-20 ~-1 quartz_block}

/summon MinecartCommandBlock ~-5 ~1 ~  
{Riding:
{Riding:
{Riding:
{Riding:
{Riding:
{id:MinecartCommandBlock,Command:/setblock ~ ~-16 ~2 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-16 ~-2 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-17 ~2 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-17 ~-2 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-18 ~2 glass},
Command:/setblock ~ ~-18 ~-2 glass}

/summon MinecartCommandBlock ~-6 ~1 ~  
{Riding:
{Riding:
{Riding:
{Riding:
{Riding:
{id:MinecartCommandBlock,Command:/setblock ~ ~-19 ~2 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-19 ~-2 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-20 ~2 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-20 ~-2 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-15 ~2 glass},
Command:/setblock ~ ~-15 ~-2 glass}

/summon MinecartCommandBlock ~-7 ~1 ~  
{Riding:
{Riding:
{Riding:
{Riding:
{Riding:
{id:MinecartCommandBlock,Command:/setblock ~ ~-20 ~1 quartz_block },
id:MinecartCommandBlock,Command:/setblock ~ ~-20 ~ glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-16 ~1 air },
id:MinecartCommandBlock,Command:/setblock ~ ~-16 ~-1 air },
id:MinecartCommandBlock,Command:/setblock ~ ~-16 ~ air},
Command:/setblock ~ ~-17 ~-1 air}

/summon MinecartCommandBlock ~-8 ~1 ~  
{Riding:
{Riding:
{Riding:
{Riding:
{Riding:
{id:MinecartCommandBlock,Command:/setblock ~ ~-17 ~1 air},
id:MinecartCommandBlock,Command:/setblock ~ ~-17 ~ air},
id:MinecartCommandBlock,Command:/setblock ~ ~-18 ~1 air },
id:MinecartCommandBlock,Command:/setblock ~ ~-18 ~-1 air },
id:MinecartCommandBlock,Command:/setblock ~ ~-18 ~ air},
Command:/setblock ~ ~-19 ~-1 air}

/summon MinecartCommandBlock ~-9 ~1 ~  
{Riding:
{Riding:
{Riding:
{Riding:
{Riding:
{id:MinecartCommandBlock,Command:/setblock ~ ~-19 ~1 air },
id:MinecartCommandBlock,Command:/setblock ~ ~-19 ~ air },
id:MinecartCommandBlock,Command:/setblock ~ ~-21 ~1 glowstone },
id:MinecartCommandBlock,Command:/setblock ~ ~-15 ~3 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-15 ~-3 glass},
Command:/setblock ~ ~-21 ~-1 glowstone}

/summon MinecartCommandBlock ~-10 ~1 ~  
{Riding:
{Riding:
{Riding:
{Riding:
{Riding:
{id:MinecartCommandBlock,Command:/setblock ~ ~-16 ~3 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-16 ~-3 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-17 ~3 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-18 ~-3 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-18 ~3 glass},
Command:/setblock ~ ~-17 ~-3 glass}

/summon MinecartCommandBlock ~-11 ~1 ~  
{Riding:
{Riding:
{Riding:
{Riding:
{Riding:
{id:MinecartCommandBlock,Command:/setblock ~ ~-19 ~3 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-19 ~-3 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-20 ~3 glass },
id:MinecartCommandBlock,Command:/setblock ~ ~-16 ~-2 air },
id:MinecartCommandBlock,Command:/setblock ~ ~-16 ~2 air},
Command:/setblock ~ ~-20 ~-3 glass}

/summon MinecartCommandBlock ~-12 ~1 ~  
{Riding:
{Riding:
{Riding:
{Riding:
{Riding:
{id:MinecartCommandBlock,Command:/setblock ~ ~-17 ~2 air },
id:MinecartCommandBlock,Command:/setblock ~ ~-17 ~-2 air },
id:MinecartCommandBlock,Command:/setblock ~ ~-18 ~2 air },
id:MinecartCommandBlock,Command:/setblock ~ ~-19 ~2 air },
id:MinecartCommandBlock,Command:/setblock ~ ~-19 ~-2 air},
Command:/setblock ~ ~-18 ~-2 air}

/summon MinecartCommandBlock ~-13 ~1 ~  
{Riding:
{Riding:
{Riding:
{Riding:
{Riding:
{id:MinecartCommandBlock,Command:/setblock ~ ~-22 ~1 fence },
id:MinecartCommandBlock,Command:/setblock ~ ~-22 ~-1 fence },
id:MinecartCommandBlock,Command:/setblock ~ ~-19 ~1 golden_rail },
id:MinecartCommandBlock,Command:/setblock ~2 ~-1 ~ air },
id:MinecartCommandBlock,Command:/setblock ~2 ~-2 ~ air},
Command:/setblock ~ ~-19 ~-1 golden_rail}