In 1928 Bentley prepares three 4 1/2 coachworked by Vanden Plas in Le Mans configuration for its factory team. The shortened shape of its engine cowling is one of the modifications necessary to meet the rules of the competition and brings to this rare variant the nickname of Bobtail. Impressive in its speed, the Bobtail # 2 leads the race for several hours before being forced to abandon by overheating.
The development continues with the Speed Six, direct successor to the 6 1/2 liter, and with the supercharged version of the 4 1/2 designated as the Bentley Blower which becomes a formidable competitor to the Mercedes-Benz which were using a similar improvement of the engine.
The 1929 edition of Le Mans is a triumph for Bentley. The competition is won by a Speed Six followed by three 4 1/2. The Bobtail # 2 of the previous year, renumbered # 10, is in the third place.
This car which is still being presented with its # 10 was sold for $ 6M including premium by Gooding in August 2012. It is estimated $ 6.5M for sale by RM Sotheby's at Amelia Island on March 11, lot 266.
Its image is shared By Sémhur (Own work) [CC BY-SA 4.0-3.0-2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/4.0-3.0-2.5-2.0-1.0)], via Wikimedia Commons :