If Marcy was a car, what kind of car would Marcy be?
I've narrowed it down to eight:
a Harley-Davidson VRSCA...

or a Meyers Manx...

or a Morgan Plus 4...

or maybe an AMC Eagle or Gremlin or Javelin or AMX...

or possibly a Suzuki LJ-series or SJ-series
or Katana or Bandit or Hayabusa...

or a Rambler American or Rebel...

or possibly an Aston Martin DB4 or DB5 or DB6...

but I think the vehicle that is most "Marcy-like" is
a Plymouth Valiant
or Barracuda (A-platform & E-platform series)
or Road Runner (B-platform & F-platform series)...