Was that 2.5 second shutter speed? If so I would try lowering your shutter speed. No need to open it to 2.5 second. The longer the shutter is open the more blur you get. More rigid pole, pushing the car, and turning off the engine are also going to help. Good luck.
Yes 2.5 shutter speed. I was thinking 1 second might not me long enough but I'll give it a shot. The ground I was on was completey flat, I tried rolling in neutral but it wasn't really working out it seemed. Are you saying get out and push it then run back in to steer?
Rotorheads gotta stick together, lol.
Mine's an '04, I think there's some pics on my Flickr if you're bored 


