For me another great idea would be the ghostbusters Echo-1, 1a or the one from the new afterlife movie all weathered. All would be similar molds with variations like the delorean and could cover a variety of years, sticks with the good current 80s vibe, and would look great going sideways round a track. Also to my knowledge not been done before. also if possible light and sound with separate batteries for siren with on off button would top it.