For those of you who remember the classic 80’s films named Back to the Future, you will already know that 88MPH was required to make the DeLorean travel through time. Once the car hit 88MPH you saw the flux capacitor light up and a number of sparks around the car formed which then whisked it in to another period of time.
You can get your own 88MPH speedometer which costs $150 as well as another number of replica 1:1 scale parts to build your own time machine looking DeLorean. Check out bttfdelorean for more details.