Complex sentence: Since June 2004 Heuliez is producing the complete Opel Tigra TwinTop 2-seater Roadster entirely engineered by Heuliez, equipped with a Retractable Hardtop and produced at a rate of 200 vehicles/day.
Split into simpler sentences: Since June 2004 Heuliez has produced the complete Opel Tigra TwinTop 2-seater Roadster which was engineered by Heuliez. It is equipped with a Retractable Hardtop and produced at a rate of 200 vehicles/day.