Principle: A principal is vicariously liable for the tort of his agent committed within the course of his authority.
Facts: 'A', who was about to compete in a car raliy, asked his friend, 'B', to drive his A's car from Delhi to Chandigarh so as to meet 'A' there at the end of the rally. 'B' was to bring in the car a suitcase for 'A', and, after the rally, they were both to take the car and go to Shimla. 'B' departed from Delhi but, before reaching Chandigarh, negligently collided with plaintiffs car which was damaged. Plaintiff claimed damages from 'A' and 'B'.

A. Only 'A' can be held liable as he is the owner of the car

B. Only 'B' can be held liable as he was driving the car

C. Neither 'A' nor 'B' can be held liable

D. Both 'A' and 'B' can be held liable as 'B' was using the car for 'A's purpose

Answer: Option D