In this week’s blog post, I decided to change things up once again – just to keep things interesting. The rarest car to exist to date and also the most expensive one, will be reviewed and the brand this car belongs to might actually surprise you. Before revealing what the car and brand actually are, it is important to note the original model will be reviewed in this blog (with production years between 1954-1957 for the Coupe) having only 29 vehicles produced during this time.  Any guesses yet? Well I won’t keep you waiting. We will be exploring the ins and outs of the Mercedes-Benz 300 SL (chassis code W…