[BrianG]

I agree with what is being said here. A high-speed vehicle is a something built/designed specifically for that purpose. Running it also in "bashing mode" is asking for trouble. Those speeds are hard on electronics (and mechanicals for that matter), so expect failures if you are trying to achieve those speeds.

And, as said, the calc is theoretical. It actually gets less accurate for higher speeds because some factors (like drag, wind resistance, etc) play exponentially bigger roles and so are more difficult to account for. But in short, if you are shooting for 95mph, your vehicle should be designed to do 120mph or more.