However, instead of driving drunk or trying to stumble home, the Washington Regional Alcohol Program is offering the Sober Ride service, where you call them and any cab ride up to $30 is free from 10 pm on Saturday the 29th through 6 am Sunday the 30th. Sounds like a great program.
Here's more on the program. You can call 1-800-200-TAXI to call for a Sober Ride cab.
Hat tip to DCist.