Scott C. Nuttall, one of KKR's heirs apparent and the head of its Global Capital and Asset Management division, leans back in his chair while dining on the 42nd floor of the firm's midtown Manhattan headquarters and shares a dream. "Maybe someday you will have private equity as a choice on your 401(k) retirement plan," he says, eyeballing a turkey sandwich served on a plate of fine china (the firm caters lunch for the entire company every day). "Today, if you are a retired school-teacher in California you can invest with KKR by virtue of a pension plan, but if you are a corporate executive managing your 401(k) you cannot. There's no product available."