The absolute Lego racer

My son got his 2nd birthday the excavators and dump trucks of Lego Duplo.
Since we live in a huge construction site. With the already existing crane and concrete mixers and the 1000s Lego is driven here dredged, loaded, unloaded, assembled, etc.
Although sometimes drops the bucket arm that's no problem, my son tried patiently until it's your turn again has (or Mom is helping). He has already received from its big brothers Lego in the cradle, so he is very skilled at assembling such things.
Otherwise he might have a little trouble when the parts fall.
Very popular toy, that is in continuous use. Highly recommended.