Carrier Addon?

[JamesKraVen]

Hello

I'm searching for a addon which looks like this

http://www.bildarchiv-hamburg.de/hamburg/hafenelbe/hafen/65_straddle_carrier_hafen/11_21413_straddle-carrier-containerlager.jpg

I had one...but i lost it....

[Ters]

What is that good for? A decorative station extension, or an actual vehicle? Just so people know what kind of add-on to look for, and it doesn't seem obvious to me that this is useful on the road.