THE SECRET ENGINE (PART 1&2) Speed comes across a Model T and becomes involved in the cars intriguing past, which involves Light Fingers Clepto a legendary gangster, who is rumoured to have hidden a large deposit of gold in a secret location. THE RACE AGAINST THE MAMMOTH CAR (PART 1&2) In the No Limit World Race, there is drama even before the race begins, when $50 million dollars in gold is stolen. Inspector Detector and his men search, but are unable to find anything. Speed barely has time to look into the case, especially when he is racing against the Mammoth Car, which seems intent on knocking all the other cars off the road. can Speed survive the onslaught from Cruncher Block and the Mammoth Car?