A center ball velocity speed trap that displays the scaled speed and is scaled so that 88 MPH will launch a complete playfield change mode (lights/music/display type) until the next speed trap trigger occurs. Of course that velocity speed trap could only be activated if 1.21 giga watts is accumulated through awards on the playfield. I'm not a BTTF geek, but that kind of a setup would be unique, cool, and fit the theme well. JJP would be able to pull that off very well.