Audi's 2013 A4 2.0T Quattro is the car for the person who can't bear to be disconnected, even while on the road. This $43,910 mid-size luxury sedan packs its own 3G connection, Google navigation suite and Wi-Fi hotspot functionality. Add to that a punchy turbocharged four-cylinder engine and elegant styling, and you've got a ride that commands serious attention. But does it deserve yours? We spent a week with the A4 to find out.