On-demand AWD units push the secondary axle by means of an Lively or passive coupling product or "by an independently powered drive system". The regular notes that in some cases, the secondary travel technique may additionally give the key car propulsion. An illustration is actually a hybrid AWD car or https://emiliofufrc.blogdal.com/33664599/the-smart-trick-of-4x4-that-nobody-is-discussing