From Twitter

A little exchange between Alexander Armstrong and myself...

Xanneroo just assembling Rex's present to be given by the new arrival. Is there a SINGLE thing for children that you don't have to assemble yourself?

danbrusca @Xanneroo Gravel!

Xanneroo @danbrusca fantastic I'm going to order a small truckful of the stuff

Xanneroo well this is a bike which means every time he falls off it's probably my fault. Now I've put it together I notice there aren't any pedals...

danbrusca @Xanneroo It is, quite literally, a pushbike

Xanneroo @danbrusca exactly sir, with two wheels - it'll never catch on