When Jeffrey (Scott Bakula) is taken to the Emergency Room after being trapped in the exploded and burning NASA van, the ambulance personnel bringing him in on the gurney tell the hospital medical staff that he has 3rd degree burns over 60% of his body. Oddly, though his clothes are very badly ripped, they are only minimally scorched. Rather strange for someone who has been burned so severely.
Shortly after getting his super power of "indestructibility", Jeffrey (Scott Bakula) goes to a small market near his apartment. He unknowingly interrupts a robbery in progress as he enters, and the startled robber shoots him. He lifts his shirt and a bleeding bullet wound on his abdomen is plainly visible. The injury heals within seconds, yet there's no indication of what happened to the bullet. It is never explained if his body dissolved the bullet, or if it was rejected by his body and extruded out at some point in the future. The viewer is left with the perception that the bullet remains lodged in his stomach.
Correction: Right after the robbery, at NASA, it is explained at least twice that the bullet was absorbed by Jeffrey.
Oddly, none of wheels of the semi are spinning as it falls into the ocean after Jeffrey (Scott Bakula) drives it off the cliff; hinting that it was probably dropped from a crane just off camera at that location, instead of actually bring driven off the cliff.
Near the end of the film, when the semi is lifted from the ocean by a crane, the film has very obviously been sped up to make the vehicle recovery appear to be happening faster.
The villains' car drives into a large ditch as it chases Jeffrey (Scott Bakula) who's driving the semi. As it drives back onto the road, there is dirt, grass, and light debris already in the exact spot where it comes back onto the pavement, indicating that the stunt had already been performed there recently and that the road wasn't swept clean afterward.
After Jeffrey (Scott Bakula) returns home from the Emergency Room, a local news program is shown playing on his television in the background. In the news segment shown, the reporter explains in detail that an unknown man (Jeffery) was severely burned while helping the driver of a NASA van that crashed. The reporter further explains that the van was carrying a canister of atmosphere which was returned from an alien planet by a space probe named Galaxy One. It is highly doubtful that the government would allow so much security-sensitive information to be released to the general public pertaining to the cargo the van was carrying.