Complex sentence: First they included the Dodge Challenge, which included Neon T4 and Dodge Ram Pick Ups, and for 2006, they concentrated on giving a push to the T4 Series, and in some races, they included the Clio Cup Mexico series.
Split into simpler sentences: First they included the Dodge Challenge, which included Neon T4 and Dodge Ram pickups, and for 2006, they concentrated on giving a push to the T4 Series. In some races, they included the Clio Cup Mexico series.