OP here. Peloton has been posted here before, but didn't get any attention.
I think this database is very interesting even if you don't care about the time saving part of it, since it claims to be a hybrid (OLAP and OLTP), it implements postgres' wire protocol and it claims to compile queries to machine code using LLVM [1].
He's joking about the rehab I'm sure...that's his style (I like it personally).
BTW, here are the video lectures to the graduate database course he mentioned in the presentation, where students were developing features for Peloton as part of the course (they're great IMO):
He is on a list of people of mine that fits on 10 fingers. James Mickens is in there.
His work on H-Store was great. I spent 6 years working on VoltDB which is a commercial spinoff of H-store and it was a formative experience for me.