Which immediate successor to the Model A introduced necessary refinements based on initial rider feedback, such as an improved rear suspension?

Answer

The Model B

The Model B was the immediate successor to the Model A and incorporated refinements based on initial rider feedback, including an improved rear suspension setup.

Which immediate successor to the Model A introduced necessary refinements based on initial rider feedback, such as an improved rear suspension?
inventionVehiclemodelscooterLambretta