Randomly-occurring presence/absence of damage/dirt on Snakeskin's car during the runaway-car and dumpster-towing sequences.
The opening sequence contains a shot in which the convention centre's real name, Canada Place, can be clearly seen. Canada Place is located in Vancouver, whereas it was previously established that the Phoenix Foundation is located in Los Angeles.
MacGyver releases the brake on the pimp's car so that it rolls down the street. For some reason Mac doesn't seem to worry about it causing a wreck or endangering the public.