Q:Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Bentley Speed Six - The regular Bentley 6 Litre and the high-performance Bentley Speed Six were sports and luxury cars based on Bentley rolling chassis in production from 1926 to 1930. The Speed Six introduced in 1928 would become the most successful racing Bentley. Two Bentley Speed Sixes became known as the Blue Train Bentleys after their owner Woolf Barnato's involvement in the Blue Train Races of 1930.
A:
Mean Of Transportation