In 2010, as part of their newest remote control train range, Lego is releasing another Cargo Train set. Lego Cargo trains tend to be popular with fans and it's not hard to see why. Trains are one of those toys that tend to last for years, and generations. Lego's first train was released in 1965 and it has since proved to be a regular release as part of the Town/City theme.

Lego tends to release both a passenger train and a cargo train every few years and the cargo trains tend to offer a higher degree of playability due to the number of accessories and action features. Set 7939 is Lego's newest Cargo Train model for 2010 and contains 856 pieces which fit together to create a whole slew of accessories to the main train.

The last release came in 2006 and utilised the largely unpopular remote control system that Lego have updated and improved for this release. Using the more efficient Power Functions system already in use in other sets, Lego have delivered more pulling power than the last set and this will please train fans.

It comes with 4-channels and 7-speeds but lacks the horn and light functions from the last set. A total of 9 AAA batteries are required to power both the remote control and the motor in the engine. This may seem like a lot of batteries but Lego have actually reduced the degree of power required and increased the efficiency from their last wave of train sets which require 9AA batteries.

The very smart looking locomotive engine comes with three carriages; an Octan fuel tank , a red box car with doors opening on both sides and a simple tray carriage that is used to transport cars. In addition the set comes with a truck cab and bed to carry the spare cargo container as well as two small "smart" cars that can be transported on the empty tray carriage. The set comes with stickers instead of printed parts, which is a shame but will no doubt keep the cost down.

In regards to tracks the set also comes with 2 switch tracks, 8 straight tracks, 16 curved tracks and 16 flexible tracks that equal the length of 4 straight tracks. A crane is also included that can lift and carry the cargo onto the train.

Overall the set is a highly payable addition to the Lego Train range and though it does not feature lights or a horn it has more power than the last release of trains. Keen fans should be able to add the missing features without too much hassle.