Complex sentence: Hennessey owns the division Hennessey Special Vehicles, which is tasked to learn from their experiences with their Venom sports cars and apply it to the newest variation of the Venom, in which it will succeed the previous one.
Split into simpler sentences: Hennessey owns the division Hennessey Special Vehicles, in which they build the Hennessey Venom sports cars. The division is tasked to learn from their experiences with their Venom sports cars and apply it to its newest variation, in which it will succeed the previous one.