Väderstad Rapid A900SF is not a REAL machine, the real machine is available only to the Rapid A800S in this design.
The differences to the original A600SF are:
9m working width
Fertilizing function in the seed
the designation F stands for Fertilizer -> Fertilizer
Wing packer or support wheels on the folding panels left and right front
Type designation A900SF in the rear of the machine on the seed tank
Forward speed to 30km / h was the real live is also made ??possible by the good Fenix ??metering actually even faster speeds possible with perfect quality seeding, but 30kmh are quite sufficient.