Sharks are scarily hot. They are the best designed predators on the planet. They have not evolved much over thousands of years. So, it shouldn't be much of a surprise that some cars have resemblance to the creatures. One of my personal favorites is the Gran Turismo from Maserati. The grill reminds me of a nurse shark.
I haven't driven one yet, but I'm sure it slices down the road like a fin in the water.