Though execs at GM won't say a peep, the financial case for the carmaker to spin off its OnStar...

|By:, SA News Editor

Though execs at GM won't say a peep, the financial case for the carmaker to spin off its OnStar service as an independent company keeps getting stronger, according to CNNMoney's Doron Levin. In a possible tip-off that a deal could happen, GM is moving OnStar's away from a closed system to allow it to work better with other technologies. The quick math on a spinoff: With 5M paying customers churning out $1.5B in revenue, a market cap of at least $7B is justified, according to one exec.