Tata Motors Ltd. expects its commercial vehicle unit to become a cash generator following its demerger with the passenger vehicle arm."This is a Rs 80,000-crore business," PB Balaji, the group CFO at Tata Motors, said in his first interaction with NDTV Profit after the demerger announcement earlier this year."We're roughly double-digit Ebitda and we'll keep increasing that and then we spend about 2-3% on capex. So, by design it's cas...