Looks like the folks at Wonderland are offering free pedicab rides to the Looking Glass Lounge, the other bar they own in Petworth. I saw this on Saturday night and I think it's only on Friday and Saturday nights. It's a pretty good idea if Wonderland is packed, and Looking Glass is a cool bar.
Not sure if they offer the rides back however, I'll check.
A commenter says they do in fact offer the rides to and from both bars. Nice!