Ernie,
If you don't have access to one of those accelerator devices do what I did. I went to the CHP and asked them to take the radar and do some times on my car several years ago. Did speed and tac checks at 40-50-60-70-80- and 90 and all were exactly on. Then they did the acceleration tests and told me if I knew how to drive a drag car I would probably cut a tenth or so off the 0 to 60 time. The CHP officer that had the hand held gun did 0 to 60 in less than that as he was in front of me.
Ron