There is the short lived VW W8.
dimensions
mass: 190 kg (419 lb), length: 420 mm (16.5 in) length, width: 710 mm (28.0 in), height: 683 mm (26.9 in)
Power density isn't there. But it is short as can be
Expensive to run, and would require a turbo
Not as cool as the W12 or W16.