Replying to Whats this car?!?

ok so i'm driving home tonight and i see this freaking sweet car. but i dunno what it was (ill explain it the best i can).

its grill looked very similar to an austin martin vanquish (which i thought it was at first, but it wasnt).
on the back (on the trunk, above the license plate) was written (in a fancy cursive style script) "marshall" or something like it.
the ensignia on the car was a trident looking logo.

i tried to get close to get a better look but 1) its about 10x faster then my car and 2) i didnt wanna risk hitting something that i'd be paying out the ass for.

can anyone help me?