Uber is offering new users a $20 credit to try their innovative car service for limited time. To get this deal, use the promo code: vyyb6 during signup. Deal expires January 31, 2014.

Uber is cars service platform that matches customers with pre-approved drivers via their iPhone app, Android app, or through web and text message. Uber service is available in many cities and adding more very quickly.

Here’s how Uber works:

• Request a car: text message your address or use the app to set your pickup location on the map
• Uber will send the nearest driver to pick you up and will text you an estimated arrival time
• Watch the car approaching you on the app. Cars will usually arrive within 5-10 minutes
• Your licensed professional driver will park curbside in a sleek black car. Uber will text you again when the car arrives
• Hop in the car, tell the driver your destination and you’ll be on your way
• When the ride is over Uber will automatically charge your credit card. No cash or tip is necessary. Just thank your driver and you’re off.