XC90 Start without key

Recently the thought came to me, what if I should lose the car key and be further away from home. You can’t drive well from the holiday home and get a spare key. Well, I could open the car via VOC – no problem. But how would I start the car? Can you get this done through the SOS button in the Volvo or what would you have to do in such a case? Maybe someone had this problem before and can give me/us a hint for the future.