The pickup truck is shown to be hurriedly leaving the truck-stop, yet in the close-up shot of the truck's driver, the blanket covering the driver's-side window is not flapping in the slipstream created by the moving vehicle; obviously a fake movie set-up with a non-moving truck-cab.
The truck's ignition is clearly switched off when the policeman first approaches the fugitive and then tussles with him over the gun, yet the truck is shown to be pulling away right afterwards, without the fugitive's having had a chance to turn the key and start the truck's engine.
It is stated that the fugitive fired several shots at the police vehicle sitting at the intersection, yet only one rifle-blast is ever shown being fired from the fugitive's truck.