It is (or recently was) still at the Adams Morgan 'Teet, so it appears to still be on the market. Hope it stays that way, I love those cans. They were even in Tom Stoppard's play "Rock & Roll" at Studio Theatre.
They used to sell it in cans at my local Harris Teeter but they discontinued it a while back. Now the only time I see it is at the Scoreboard Walk at Nats Park.