Faygo is still around as well as another old-time Detroit favorite, Vernor's Ginger Ale. I don't know about bigger bottles either. These days here in Colorado we have all sizes from 8 oz bottles right up to 3-liter bottles. I'm sipping on my 24 oz/710ml bottle of Diet Pepsi right now, in fact. I'm 51 myself, and I already have my AARP card, so just a few more years to go (10.5) until Social Security!
"We stay here, we die here. We've got to keep moving". Trucker Mark