Back to the Future fans, listen up.

When customers visit the "build and price" page for either the 2016 Ford Fiesta or 2016 Ford Focus, they will be able to spec the compact hatchbacks with a flux capacitor — but only between Oct. 21 and 26 for "Back to the Future Day," the dates to which Marty and Doc travelled.

The price is a nominal $1,219,390; it is powered by 1.21 gigaWatts of energy, after all.

For those of you who don't remember, the flux capacitor was the key component to Doctor Emmett Brown's time-traveling DeLorean in the movie. Of course, outside of the DeLorean, the option will be a class exclusive for the Ford vehicles.

Once selected, you'll be able to see how the flux capacitor looks embedded in the dash in place of the SYNC infotainment screen. Sure, now you won't have navigation — but where you're going, you won't need roads.

Image: Ford

Ford does warn in its promotional YouTube video that the use of the flux capacitor is “for recreational use only," adding that "interfering in major historical events is illegal and could have unintended consequences for all of humanity.”

The Ford flux capacitor appears to work just like Doc’s. As the Fiesta or Focus nears 88 mph, the speed at which time travel is accessed, the flux capacitor flashes faster and faster before entering the time-leap. You might want to do this on a closed course — for safety reasons, of course.

Once you're successfully back in time, Ford recommends that you “avoid your past self at all costs, as this could potentially cause a rift in the space-time continuum.”

You should check out the Ford Mustang while you're back there; though the 2015 models don't look quite like what BTTF may have imagined, its predecessors are still worth a glimpse.

Image: Ford

Before you get too excited, or call to get pre-approved for a loan, it's our duty to say you can't actually purchase the car you fitted.