I did not know that you are annoy about it, DD. We only said that we can't see the picture. Now we got your point about about the truck.
Yes, I'm agree that it would be nicer of him to park his truck other side to free space for your visitors to park.
Did you know who is the owner of truck? If yes, then talk him in friendly way to move his truck to other side to park because you have visitors to park on front of your house.