What luxury car is complete without a Best Buy worth of technology? Right, none; appropriately the 2015 Audi A3 is loaded with circuits and is ready for battle. One of its coolest features is a retractable seven-inch navigation display. It silently tucks away into the top of the dashboard when not in use, sliding out of sight like a dollar bill into a vending machine. There’s also in-car WiFi as well as available lane-keeping assist and adaptive cruise control, to name but a few of its many features. And of course it’s equipped with the latest-generation MMI system, which includes an integrated touch pad on top of the central control knob.