While the Batmobile is a super cool superhero car, it's too obvious and recognizable for a hero that is supposed to be under the radar. He would be more discreet in a vehicle drawn by illustrator Gerald Bear. He has drawn what he thinks vehicles from famous movies would look in real life in this series called 'Unconventional Heroes.'
The Milan-based artist modeled the cars after vehicles we see on a daily basis. For example, the car from 'Back To The Future' would look more like a Fiat, and the Batmobile would look like a little black Volkswagen.
Some illustrations are more realistic than others; 'Starsky and Hutch' would be probably drive a typical sedan, as illustrated in this series, but I don't think Hunt and Louda from the movie 'Rush' would be racing cars in a sleigh.