Simplify the following text for a Grade 6 native English-speaking person.
Original: The Corsa is a variant of the MC12 intended for racetrack use . In contrast to the race version of the MC12 , of which street-legal versions were produced for homologation purposes , the MC12 Corsa is intended for private use , albeit restricted to the track , as the Corsa 's modifications make it illegal to drive on the road .
Simplified: The MC12 was succeeded by the Maserati MC12 Corsa in 2006 .