A puzzeltask

[mnrvovrfc]

The bumper block makes this impossible. The other difficulty is having to turn the car that's on the "C" part. With the way I solved it first, the car that's on "B" will have to be moved into "A". But there might not be enough space in "A" to hold both cars. If so then just move the car that's in "C", then turn so it's on the "B" space, then the car that was sent to "A" space, move it to "C" part.

Cannot just move the two cars into the single lane below because they will have to be exchanged in position. There's no room in front of the locomotive to put the car that starts in "C" otherwise.