2 to 4, which were built with two engines (instead of one) which allowed them to reach a maximum speed of , and included a buffet. These units were delivered in July 1934 and entered service on 15 July 1934 between and . This was the first long distance diesel express service in Britain, and covered the miles between Birmingham and Cardiff in 2 hours 20 minutes. This was intended as a businessman's service, fares were charged at the normal rate, however bookings were limited by the 44 seats of the railcar. The next three units, nos. 5 to 7, entered service in July 1935 and had 70 seats. These were used on services between London, Oxford and Hereford. The next batches of railcars numbered 8 to 34 were of various different designs and entered service in batches between 1936 and 1941, two of these (nos. 17 and 34) were designed for express parcels services rather than passenger services. The earlier units operated as single railcars. The final four, numbered 35 to 38, were twin coupled units with the driving cabs situated at the outer ends of the set, these were in effect the forerunners of today's diesel multiple units (DMUs). These had the capacity for 104 passengers, however a standard corridor coach could be installed between the two cars, and this could increase the seating capacity to 184. These were introduced in November 1941 and worked the Birmingham-Cardiff service. Fleet list Five of the 38 railcars were destroyed by fires: No 9 was burnt out at Heyford in July 1945; officially condemned in May 1946 No 10 was burnt out at Bridgnorth in March 1956; officially condemned in May 1956 No 35 and No 36 were destroyed by fire at St Anne's Park, Bristol in April 1956; officially condemned in April 1957 No 37 was damaged by fire in February 1949 and was stored until being scrapped; officially condemned in September 1949 Preservation Three of the GWR railcars have survived into preservation, which are as follows: Models Hornby Railways manufacture a model of the 1940-style railcar in OO gauge, using tooling acquired in their takeover of Lima. In late 2017, Dapol released an OO model of the streamlined 1936 Gloucester RCW railcars in a variety of liveries and numbers. Graham Farish has produced an N-gauge model (with various numbers, e.g. 19, 22, and 20), both before and after their