5. Bugatti Royale
The Bugatti Royale which is also known as the Type 41 is a large luxury car that was manufactured between the years 1927 and 1933.
With an overall length of 6.4 m (21 ft), and weighting 3175 kg (7000 lb), the Bugatti Royale uses a 12.7 L straight-8 engine which developed 300 hp.
With only 6 units built, and taking into consideration its dimensions, made the Bugatti Royale one of the largest cars in the world.
The initial plan of Ettore Bugatti was to build twenty five units and sell them to royalty, but not even the European royalty were not buying such things during the Great Depression, and Bugatti was able to sell only three models of the six made.