How much would you pay.....

A big problem could arise in case a cop wanders off the beaten path (ask how I know) and the fact that the street has no traction if your making big/bigger power levels. G-techs are accurate, but hard to simulate a 1/4 mile drag strip on the street, but great for tuning to see if you got faster or slower, just keep the top speeds down.
Yep. I was thinking for my own TnT. It would be much cheaper if I made changes to quickly go out of town, or even to the next county, or I can even go into the next state ..LOL and try my changes in the same spot