Snaefell Mountain Course, or Mountain Course, is a road-racing street circuit used for the Isle of Man TT since 1911 and Manx Grand Prix races from 1923 in the Isle of Man. The motorcycle racing is held on public roads closed for racing by an Act of Tynwald (the parliament of the Isle of Man) under the Road Racing Act (Isle of Man) 1982 and the Road Traffic Regulation Act (Isle of Man) 1985. It is the oldest motorcycle racing circuit still in use. It is also one of the deadliest, with 6 deaths in 2011, 5 in 2014 and 248 cumulatively by 2015, of racers in competition.
Dave Molyneux (born 21 November 1963 in Douglas, Isle of Man) is a Manx professional Sidecar racer. He is the most successful Sidecar competitor in the history of the Isle of Man TT races, achieving 17 TT victories and 30 podium finishes. His TT Victories place him third on the all-time wins list.
Moly, as he is often known, was the sidecar lap record holder for the Snaefell mountain course set in 2015 with a time of 19 minutes 23.056 seconds, an average race speed of 116.785 mph for 1 lap.
In 2013, a right-hand bend on the Snaefell Mountain Course used for TT and Manx Grand Prixraces at the end of Cronk-y-Voddy Straighton the main A3 road was named Molyneux's in recognition of his wins, together with John McGuinness who was similarly honoured.