Can you walk for millions miles? It is possible. If you walk for 30 miles per day, then it will be arrounf 11,000 miles. You need 91 years to meet millions. I think if you drive 100 miles per day, you will need aoound 28 years. It is possible.
Can you have million meals in your whole life? I don't think it can be easy for everyone. If you eat 3 meals per day, then you will have 1100 meals per year. 100 years will be 110,000 meals. It is not possible for most people.