Lego 9v Long Distance Garden Railway

Very long 9v Lego railway line, approximately 400 pieces of track.

[@technoandrew]

Wow, you certainly have a lot of track.

[@7thRegimentDrummer]

At 1:36 in the left it looks like q blue head

[@CombraStudios]

so long! it's only from straight tracks?

[@romainbazire9867]

how many transformers and speed controler do you use? only one line connected to electricity?