Question:
Is it permitted to eat while being in the car driven by someone else?
How about on an airplane?
Answer:
Thank you for your question.
Yes, it is permitted to eat while one is traveling in a car or plane, and it is not considered shinui makom. Regarding the people inside the car or plane they are still in their place… inside the car.
Best wishes
Sources:
B’tzel Hachochma 6-72, Sharei Habracha 9-23,