Corrected entry: When Woody is about to be run over by a truck tire in the gas station, he could've easily moved. The driver wouldn't have seen him.
MikeH
6th May 2016
Toy Story (1995)
Correction: The driver might not have seen him but there were people in the gas station and on the concourse who could well have done so.
Correction: It was a quick reaction. Buzz ran away as he saw it coming sooner but Woody thought it best to stop moving right away, not knowing where to go. He didn't want to be found in the middle of the pavement in the gas station lights either.
lionhead
Keep in mind that he was going to go further under the truck in a few seconds. There's no reason to suggest that he couldn't have done that earlier. He wouldn't have been seen.