Supernatural's biggest stars are apparently too famous to remember Richard Speight Jr and Rob Benedict.
Season 1, Episode 4
July 4, 2016
Actor Idris Elba tests his limits in a set of races that happen on land, in the water and in the air. First up: He prepares for the Circuit of Ireland race, with help from rally driver Jimmy McRae.
Season 1, Episode 3
Idris tries to secure a drag racing license with help from 2012 NHRA champion Antron Brown.
Season 1, Episode 2
Idris performs aerobatic moves at the Coventry Airbase Airshow in one his biggest challenges ever.
Season 1, Episode 1
Idris tries to break Sir Malcolm Campbell's "Flying Mile'"record, but needs to top 174.2 mph to do so.
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