I'm with the others here that believe this is a waste of time. Personally, I would speak with my neighbor if it bothered me.
If you CANNOT safely get into or out of your driveway, then call the cops and they will get there evenetually and cite and tow as appropriate. But, don't expect THAT one to get towed. The OP clearly has plenty of room to get in and out.
I got cited in SF once and I have relayed the story here in the past. Essentially, the question was whether the driveway began where the slope started, before the slope started or where the slope ended. I was about 3 inches past where the slope started.. it was an 18" slope, then a 9' wide driveway (the flat part), then another 18" slope on the other side. So, the DPT person that had BACKED into the driveway I was supposedly BLOCKING had roughly 11' 9" to maneuver into the driveway to prepare the requisite TOW paperwork and wait for the towtruck after writting me a BS ticket for BLOCKING the friggin' driveway. Once I showed up, he pulled out in the city STATION WAGON with no delay whatsoever.. seemed like he had plenty of room to negotiate his way out of the driveway... in spite of the fact that I had not moved an inch. Go figure!
So, if it is truly BLOCKING your access, call. If it is NOT blocking or reasonably impeding your access, then deal with it like a good neighbor.