Right before Ralph rips the bumper & taillights off of the Cadillac, there is a shot of the Cadillac with the bumper & taillights already removed.
At 7:47, the character says the truck will be on I-5.
At 9:25, the scene shows the traffic is on I-15, leaving California and entering Nevada.
I-5 does not cross the California border into Nevada, but I-15 does.