Carniverous V-Brakes ate my rim

I don't think it's meant to do this, originally uploaded by mike1727.

Another rear rim falls prey to the ravages of winter road grit and year-round Hertfordshire mud (with added flint dust for extra abrasion).
Disc brakes are looking more and more like a good idea, but at a high price- fitting them would mean new brake levers and shifters on top of two new wheels.
The green travel legislation which underpins the company bike scheme won;t help- employees can't buy accessories without a bike, and I don't really need another bike. No, let me rephrase that, I obviously need more bikes /, I just can't justify the spend. It is possibleto buy a cheap'n'nasty £80 Halfords bike just to be able to save money on accessories though...hmm.