Complex sentence: Falsely, both cars are often considered as one chain of succession, which is incorrect since the 412 was in planned development before the 408 production began, simply offering more features to the driver for more expenses.
Split into simpler sentences: Falsely, both cars are often considered as one chain of succession. This statement is however incorrect, since the 412 was in planned development before the 408 production began, simply offering more features to the driver for more expenses.