In August 2001, Josh Swartz crushed the earlier record, climbing all 15 peaks in a 5d23h41m, car-to-car. Josh's trip was solo and self-supported, particularly fine style. This appears to be the FKT for a self-supported trip.
Swartz reported:
In 1998, the well-known speed climber Hans Florine, and his climbing friend Russ McBride and Tony Ralph bagged all 15 CA Fourteeners in 9 days, 10 hours, and 50 minutes "car-to-car time." Last September, MountainZone.com ran a feature on the Hans Florine's solo attempt to climb 14 of the 15 Califonia Fourteeners in 6 days. Hans wasn't able to complete his quest. During those few days, I followed his exploits from my cubicle and wished I could be out there "cruising the Sierra" too. In early August, 2001 I got my chance. Below is an account of how I climbed all 15 CA 14ers in 5 days, 23 hours, and 41 minutes "car-to-car time." All of my climbing was done solo/ropeless, and I was completely self-supported. To my knowledge, this is the new record. If anyone has done it faster, please stand up!