Parking Space

HI all, would appreciate advice on my situation.

I live outside a big city and don't have a parking space in a place where off-street parking is not allowed. I recently got a job downtown and will need to drive there every day. On the side of my house there is a driveway which is owned by the next house. The first floor tenant of that house parks his car there and drives to work every day. In the back of the driveway is his old car (he just bought a new car a couple months back). I noticed that there is enough space behind my house to park a car, and the same for his house (if some of the grass was converted into a parking space). What I would like to accomplish is to buy a right of way for the driveway from the owner of that house, and then that tenant and I could both park behind our houses and use the common driveway.

I looked in the property records and found the owner's name and another search shows that he owns a commercial printing business that according to an automated website estimate receives $1-2 million/year in sales. I am basically a graduate student without much funds.

I could do another search to maybe find his personal address and then send him a letter. What I am wondering is, since he doesn't seem to have any incentive, or at least I don't know what he wants or needs, how do I craft a letter to increase the chance that he will deal with me? Are there any books I should read on negotiation? I might not mention a sum but would be willing to pay a few thousand dollars for the right of way. I'm not sure how much parking spaces in this area are worth because none of the searches I did brought up anything, they are more focused on downtown, and in any case what I am trying to get is a right of way and not actually buy the spot from someone else. Thanks for any insight.