Even then, if I telephone a business on the other side of the country and order something over the phone then the transaction will originate hundreds of miles from where I am. You don't need to be physically present when your card is used. There are many scenarios where a card could appear to move around the country (or world) while still actually being legitimate transactions.
After some time, the MC system seems to have learned my patters and also coordinated with other data. For example, I bought a ticket to US with the same card. No single call on any purchase over there. They knew I was in US and most probably the shopping was legit.