I was thinking this would make a positive impression and say hey, I'm really interested and I'm willing to go the extra mile. The person who answered the door and to whom I gave the envelope seemed baffled that anyone would do this... saying, you know you can do this online...
I can only conclude that this is a ghost-job situation, where they didn't envision being called out in person and on site. Otherwise, what kind of dicks don't at least raise a respectful eyebrow at (or at least acknowledge) the guy who drives over to their office to hand-deliver a letter and resume?
After that I knew for sure that I wouldn't want to work for these jagoffs anyway... even if the job were real.