In 1903, America had only 150 miles of paved roads, no gas stations, and no highway maps. Crossing the continent by car was deemed impossible until Dr Horatio Nelson Jackson accepted a casual $50 bet to prove the sceptics wrong. Alongside mechanic Sewall K. Crocker and a goggle-wearing pit bull named Bud, Jackson embarked on a gruelling, breakdown-riddled, 63-day journey that changed transportation history forever.