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• S4.E1 ∙ Drain the Ocean
• S4.E2 ∙ Stuntman
• S4.E3 ∙ Build that Tune
• S4.E4 ∙ Car of the Future and Old is New
• S4.E5 ∙ Cut-Away
• S4.E6 ∙ Bridge Too Far
• S4.E7 ∙ Dragon Race and Grandscapes - The Second Elimination
• S4.E8 ∙ Spooktacular
• S4.E9 ∙ Blown Away
• S4.E10 ∙ High Wire and Secret Cities
• S4.E11 ∙ Window To The Future
• S4.E12 ∙ Beginning, Middle & End
• S4.E13 ∙ Sky's the Limit
• S4.E14 ∙ Grand Finale