In the opening, Lex is standing on the Luthor logo used for the helicopter landing pad, watching his father's arrival. In the next scene the helicopter lands on the logo, and there has been no indication that Lex has moved.
Like Clark in the episode Hug, and multiple other classmates, Chloe and Lana are both 15 in this episode, but clearly driving without a licensed driver present. In Kansas they would have a restricted license at 15.
in the closing scene when Clark sees Lana in the truck he shouts her name, you can clearly see a filling on the bottom left of his mouth. being the man of steel surely he would not get cavities.
The Ledger edition that Jonathan and Martha are reading when Clark arrives home from school reads "Management Problems Sited" in the sub heading; it should say "cited" not "sited"
When Lana re-enters the truck to shield herself from the tornado, the Lavaiel mic is visible tucked into the waist of her jeans.
If Lana had lived in Kansas (part of "Tornado Alley") all her life as is claimed in the series, she would know that when she saw tornadoes, she should move away from the truck and lie down flat as low as possible in one of the gullies. Someone familiar with tornado weather would NEVER climb back into a vehicle.