I don't think he actually hates the car. Tesla claims (I believe in their lawsuit against BBC) that they found a copy of the script for that episode, and it involved driving the Tesla around off screen until the battery was quite depleted, then driving the car to an area where they knew in advance they couldn't charge it up. Totally against real world conditions, and gave a very false picture of what owning a Tesla would be like.
"It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better.
The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat."
-Theodore Roosevelt
Clarkson is just an old dinosaur who is slinging mud at the most innovative car maker in the world. It's entertainment first, and accuracy a distant second.
