It's simple. I hooked a sports car to nuclear-powered time portal device. The center of it all is the flux capacitor, a device that opens the rift to the third dimension and allows the user to drive to any point in the time stream that they wish. From the present, its current can flow to the past or the future.

[As he says this, he gestures to his flank, where the meaning of the y-shaped marking should now be clear.]

And, truth be told, I'm itching to do it again.