When the British couple are approached and told that B.A's cab is out of service, the couple are waiting whilst B.A. throws their luggage into the car. When the camera view changes the lady is seen sitting in the rear of the cab. When the camera reverts back, the couple are waiting to enter the cab again.
Hannibal parks his taxi directly behind Face's taxi (the two taxis are almost touching at this point, with practically no space between them). Hannibal then makes a phone call in a phone booth. When he gets back, you can see that as he starts to drive, his taxi is parked several meters behind Face's taxi.
When they go to run the cars through the car wash that has been converted to a quick paint operation, they cover all of the cars' windshields with paper to keep the paint off the glass. But then there's an interior camera view looking up through a windshield as paint is sprayed down on it.
When one of the Love cab company's cars crashes through the Lonestar company's building, the cab's windscreen is alternately smashed/intact.
In the car chase scene when Hannibal performs U-turn, his car is different than on the rest of the shots.
The 'TAXI' sign on top of a Lone Star cab flexes after someone lands on it.
One of Crane's bullies (played by Donald Gibb) is introduced as Hal Billings, but in the closing credits his name is Deke Billings.
The license plate on Face's Corvette is S967238 which was the original license on B.A.'s van. And now B.A.'s van has 2E14589 which was used alternately with the original earlier on.
When B. A. throws the bad guy over the taxi cab while helping the British couple, a crew member can be seen on the lower left corner trying to break the bad guy's fall.
According to Hannibal, Romulus and Remus "held off a whole army just because they held on to one little old bridge". Romulus and Remus, the twin founders of Rome, never defended Rome by protecting a bridge - it was the Roman officer Publius Horatius Cocles, in 509 B.C.
When Face talks about starting the job he says he doesn't want to drive a cab, that he 'just can't see (himself) driving a cab.' In 1:7 "The Out of Towners" though he also was a cab driver as part of the team's cover.
When Donald Gibb is introduced to Michael Ironside, he is introduced as "Billings" from Soledad. Ironside calls him Hal without ever hearing his first name.