I know -- through the magic of Sitemeter, so don't get any creepy ideas of me stalking -- you're from East Sussex and this happened in West Sussex, but do you know anything about the GrannyKart Blowout?
I found this bizarrely, and maybe macabrely, fascinating. For instance, did happen at Tesco's or Sainsbury's or somewhere else? I don't know why that matters, but for some reason it does. What started it? I could see if it were over the last package of Chocolate Hob-Nobs.* Was either morbidly obese, and therefore have an unfair advantage? One was taken away to hospital, after all.
Update: Further research tells me it happened in a place called Crawley, (Really? "Crawley"? What's the next town over, Little Snivelling?) a new town which has Tescoses, Sainsburyses, and ASDAses and Icleandses.
*Mmmmmm. Chocolate Hob Nobs. Though my research has discovered a Milk Chocolate and Orange Hob Nob, which I would Kill to Get. Yes. Kill.
**Seriously, check out the site. It's angry! No wonder the grans were playing at MarioKart.