A truly awesome model from the line up of Replicazz from Railscale33d. This massive N scale Road Train can be purchased as a kit, where components like rims and tyres will have to be painted and glued together.  This road train has a total length of roughly 260mm!!
 
 
The kit can also be purchased assembled and painted in any paint scheme (depends on complexity)
For your interest, the truck and stock trailers can be bought separately 
Link To Cattle Crate Trailers:  CATTLE CRATE TRAILERS | N Scale
Link To KW T408 SAR: KW T408 SAR | N Scale
 
This Kit Contains
x1 KW T408 SAR Cab
x1 KW T408 SAR Chassis
x2 Front Rims 
x30 Rear Rims 
x30 Rear Tires
x3 Cattle Crate Trailers
x2 Dolly's
x2 Dolly Pins 
 
(Spares will be supplied for rims and tires)
 
A video is available on how to assemble these Replicazz Kits (see below link)
https://www.youtube.com/watch?v=o3_w8Y2iamg&t=3s
Available as well are various detail parts that can be bought separately and fitted, to give your model a true one off look