JSW Motors and Mahindra & Mahindra are open to developing range-extended electric vehicles (REEVs) if government incentives broaden beyond pure EVs. REEVs use an electric motor for propulsion, with a small internal combustion engine solely for generating electricity. Experts caution that REEVs are a transitional technology, distinct from battery-electric cars. Discussions on taxing REEVs similarly to EVs have emerged, with some proposed regulations counting REEVs as multiple vehicles under fuel efficiency standards.