But I can't live in the past. This Coke Zero is what we have now, and I'll drink to that. This is why Coke tastes better at McDonald's than anywhere else. Coca-Cola: "Just what is the difference ...

For decades, from No-Cal to zero sugar sodas to Diet Coke ... This could explain why so many people prefer a crackly McDonald's Coke over a can or bottle. As for consumer preferences, there ...