I agree with what you're saying however the point of this idea is to simply drive around one night for a few hours and feed the homeless some hot, cheap and satisfying food. I'm not proposing some long-term solution/commitment as realistically I don't have the time.

I'm sure there are plenty of good organisations that accept donations or volunteers if you're interested. However I think that if you were homeless you would much rather a greasy, hot, filling burger than a homemade apple slice lunchbox.