Legistlation proposal: Chemical castration for white van drivers

Frankly white van drivers seem disproportionately aggressive and anti-social. I propose that if you are to drive a white van for a living you should undergo chemical castration, to resolve this unfortunate medical affliction. Charity volunteer white van drivers would of course be exempt (due to generally not being selfish and entitled pricks), as would people driving hire vans as presumably they won't be exposed to the white-van effect for long enough for long term change.

This proposal was inspired by today's white-van dickhead, who beeped at me several times and then shouted "there's a fucking bike lane you retard" after I took the middle of the third (right hand) lane about 40 meters before turning right at a roundabout, at a convenient red light (he was not waiting at the light, but approached behind me as it went green). He shouted at me as he swerved into the middle lane to go straight over said roundabout, midway across the roundabout (as there was a bus in the middle lane going slightly slower than me before that). I can only assume that it was some environmental effect making him act so irrational - hence the proposal. He is the third white van to act aggressively towards me in the past 6 weeks, reinforcing my environmental effect theory.

What do we think? Yay or nay?