One area where Allison is taking a strong lead is
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in heavy-duty hybrid drivelines. Its solution is a gearbox-sized unit that blends torque inputs from a diesel engine and a set of regeneratively charged batteries. Output is through a simple epicyclic gear set. which adds an ingenious electro-magnetic clutch locking system to create the electronically variable transmission, The number of units already in service in North America runs into many hundreds. During the Hungarian event, we were briefly able to drive the first hybrid articulated bus in Europe, entering service in Switzerland. However, while a US$ price in six figures might be realistic for the subsidised world of pubic transport, a couple of noughts will need to be lost before it has any commercial appeal to goods transport operators.