Ok, guess I was wrong about the Sprint Booster, using it during the trip to Colorado for the Rally, I found that it works in the mountains, just fine. Problem is here in Texas, with the 70 and 80 MPH speed limit, if you are doing 80 and hit the gas the booster makes little difference, unless you are in 4th gear. At low speeds in the mountains, it makes a difference.
My BAD, but here in Texas, unless you are in traffic, around 30/40 MPH, it won't get much use. Guess what I really want is a Turbo, or Nitro, no let me think about that...