Apparently riding a bike isn't all that easy...
"the commercial director of Halfords, said: “It turns out that getting off on the right foot on a bicycle, ditching the stabilisers and speeding away from your anxious parents is actually much more complex that people realised. "
Full article here
I personally wouldn't trust Halfords with anything bike related (but that's just a personal point of view). They are, after all one of the leading retailers of BSOs
From what I remember my little brother managed all of these things, in one go, straight down the steep drive and into the road.