The bag I could fold after use and bungee it back onto the rack and keep it there. Or take it to a store to grab a couple items if need be. That's not a bad idea. I can use the bungee cargo net I just ordered to hold it down. I can also put a rectangular plastic piece in the bag as a base. When I feel that I need a bigger bottom, I can turn it 90 degrees so that the rack and the plastic base are in a cross shape. That would give me a bigger platform in case I have a lot of smaller items from the store. I like this....cheap and easy to replicate. In Canada some stores charge for plastic bags so having a big bag on me would be handy. I'll try it tomorrow and see how well it works for Indian food.

One thing. Any idea on some sort of suspension. I'm thinking putting some polyfill on the bottom of the bag maybe? to cushion the bumps...

Maybe another plastic rectangle base with some soft springs in between the 2 plastic bases? hmmm....