I'd love, at some distant future occasion, to try and build a sahara-like double engined car. This will not be any time soon, but I devote a little brain power to it now and again and inevitably questions crop up. The one that hit me last night was:
From my understanding, cars such as these can be driven on either, or both engines. Is there some sort of mechanism in place to disengage the clutch of an engine when its not in use? Surely if you were driving on, say, the front engine and 'towing' the rear, you'd not only be fighting the compression of the rear engine, but also the fuel pump etc would still be running off of the spinning camshaft?
Or have I completely misunderstood the mechanics of these cars in some major way?
