As tensions rise in Ukraine, the Russian economy is feeling the effects. The Russian currency, the ruble, has fallen to an all-time low against the dollar and the Euro. Plus: Apple and car manufacturers now let drivers use their iPhones to make calls, play music, get directions with a touch or a voice command. Apple's "CarPlay" technology comes this week to Ferrari, Volvo and Mercedes-Benz cars. Android is also going after the car. We navigate the tech war in your car dashboard. Finally, new sulfur emission rules coming from the EPA throw a spotlight on cost-benefit analysis: weighing immediate costs of wringing more sulfur out of emissions, against long-term health and economic benefits from less smog.