Sounds like you neighbors a real pain.

MC destroys screens. He went through I think 3 screen doors when living with my mom and then when my brother took him destoyed another at his apartment, not to mention the window screens. Sure enough when I took him he went to work on mine. I didn't have the money to keep replacing screens and in my area outdoor cats are dead cats because of the coyotes. The screen doors (I have 2) I went and bought the metal pet barriers you can attach to screens, the window sills I put double sided tape on which he hates. I also put a scratching post near the back screen door (his favorite screen to destoy) so he could take out his frustration of not getting to the screens on that. In the end the post was shredded but my screens were fine. The metal screen protectors are still on but I no longer keep the double sided tape. A couple of times I've caught him stretching on the screen which I use a squirt bottle for, but for the most part he no longer just tears through them.

I wish I had some suggestions how to keep them away from the truck. I don't know how well they work but don't they have sprays that keep cats away. Maybe you could line your property line and his with that to discourage them from going that way?