I think the big win with that model vs Ocado is that scaling down is fine, you work with whatever shops are in the area and don't need to deal with building fulfilment centres. Maybe you need a car park somewhere to put the vans overnight. Scaling up is a case of moving into different areas, or onboarding new shops. Absolutely agreed that last mile is a nightmare but we mostly had it down I think, the biggest pain there was that we were relying on a bunch of third parties to pack an order, and if any of them got something wrong we ended up with an unhappy customer on the phone and needing to deal with it.