What's the handcarty thing?

[SuperSpeedMaglev]

The thing where you have two people and its like a seasaw, but your pushing both ends?(SORRY FOR TERRIBLE DESC)

 

[cascaderailroad]

A pumper upper downey thingy !

A hand car ... one is on Cowboys site, and possibly on the DLS

 

[oknotsen]

Do you mean these things?

http://en.wikipedia.org/wiki/Handcar

 

[SuperSpeedMaglev]

Thank you