Question:
If one begins eating while driving and then arrives at the driveway of his house and then goes into his house, is this considered to be a shinui makom of room to room or house to house for the purpose of whether the original bracha would still be in effect should he choose to continue eating?
Answer:
A person’s car is considered a different house then his home, and not just a different (portable) room. Therefore it would be considered from house to house.
Best wishes