1. If I'm not supposed to post here why can I post here.
2. You need do some reading. The independent double wishbone suspension supported by fiberglass cantilevered springs on the Corvette dates back to 1984. It happens to be the newest spring design used on any road car. Steal springs and air springs are all older by at least 100 years.
As I said, a refinement of a design does not make the design modern.
If I take a wheelbarrow and add mechanical brakes on it on it so it doesn't go out of control going down hills, it's not a new wheelbarrow. It's a refinement of a wheelbarrow.