I need to record a specific sound, but I don't have something I need to do it with: a car. I need someone, more like two people, one in a car, one standing on the road to do the following:

one person with some sort of digital recorder and a mic stand in the bicycle lane of a street, or an empty parking lot, and another guy in the car accelerate to around 40 mph and honk the horn as you drive past the guy recording it.

Then the first guy can upload that file and send it to me. You'll get a warm sense of helping someone out and the thrill of being in a near death situation where any slight mistake could result in your death!