Factual error: The truck that the T-1000 uses to try and run down John in the overspill, is a Freightliner FLA 9664, which uses a diesel engine - it does not use petrol. Diesel is much harder to combust in comparison to petrol/gasoline, and the spark from the battery cables on the spilt diesel would absolutely never ignite under those circumstances. (00:37:55)
Factual error: There is absolutely no way the Police would send a helicopter to a crime scene with only the pilot on board. He has to fly the helicopter close to buildings, trees, power lines, and he may come under fire or have to manoeuvre out of any one of a number of crisis situations, and fast. He cannot possibly serve as an observer or pass on situation reports as well as controlling his aircraft. The fact that they needed an empty seat for the T-1000 is no excuse; he would have an observer on board with him. (01:50:15)
Factual error: When the T-800 is scanning the parking lot in the bar near the beginning of the movie, he scans the lone car parked outside and his display reads "Plymouth sedan." The vehicle he scanned was a Ford LTD Crown Victoria. (00:06:50)
Factual error: When the Terminator is running from the T-1000 and the T-1000 shoots into the Terminator's back he shoots 26 bullets. That's impossible, the gun he is using is a Beretta 9 mm - even if double stacked it is impossible. (00:59:30)
Factual error: When the Terminator and John are replacing the starter on the Ford Bronco, the Terminator is removing/installing the starter bolts vertically. However, all Ford starters are held in by bolts that run horizontally.
Factual error: When Terminator shoots T1000 in the liquid nitrogen truck, the trucks tips over and is still moving which would be impossible. It would just stop dead in its tracks not continue for another 100 feet like it does in the movie.
Factual error: While escaping Pescadero, Sarah breaks Dr. Silberman's left arm with a baton as he reaches for the phone. Moments later, when Sarah is holding Dr. Silberman "hostage" by sticking the syringe of cleaner fluid, he opens the security doors (which are extremely heavy) with the same left arm. This would be virtually impossible and downright excruciating.
Answer: In addition, another deleted scene shows that the T-1000 was damaged by being frozen and thawed and was having difficulty maintaining form. He wanted to be sure he wouldn't mess it up.
LorgSkyegon
What's especially odd about the scene is that both examples we gave to help answer this question were actually deleted from the original release. When I first saw this movie in the theater when it was released I had the exact same question, it wasn't until I saw the Special Edition with the deleted scenes reinserted that it made sense.
BaconIsMyBFF